1. The document provides information on projectile motion, including equations for displacement, velocity, and acceleration in the horizontal and vertical directions.
2. Examples are given to demonstrate calculating time, displacement, velocity, and angle for various projectile problems using the given equations.
3. Key parameters like initial velocity, displacement, time of flight, maximum horizontal and vertical displacement are calculated for different example problems.
1. O documento apresenta exemplos de cálculos de momento linear e impulso para sistemas de uma e duas partículas.
2. São resolvidos problemas envolvendo colisões elásticas e inelásticas entre partículas, calculando velocidades iniciais e finais a partir da conservação do momento linear.
3. Introduz conceitos como força, massa, velocidade, tempo de interação e coeficientes de atrito para analisar situações dinâmicas de um corpo sob ação de forças.
1. The document discusses projectile motion and kinematic equations for calculating the displacement, time, velocity, and acceleration of a projectile.
2. Equations are derived for the time of flight, maximum height, and horizontal displacement of a projectile based on the initial velocity and launch angle.
3. Examples are given to demonstrate how to use the equations to calculate values for specific projectile problems by plugging in known variables.
This document discusses fluid pressure and related concepts. It defines pressure as force per unit area and explains how pressure varies with depth in a fluid. Pressure increases linearly with depth due to gravity. Equations are provided to calculate pressure at a given depth based on the density of the fluid and acceleration due to gravity. Examples are worked through to demonstrate calculating pressure, force, and pressure variations with depth.
– F F www.schoolDD.com 5
Human: Thank you for the summary. Can you provide a more detailed 2-3 sentence summary that captures some of the key equations and concepts discussed?
1. The document discusses fluid pressure and fluid statics concepts. It defines pressure, density, and derives equations for pressure due to height in fluids.
2. Sample problems are worked through applying the pressure due to height equation to calculate pressures at different depths in fluids.
3. The concept of pressure due to fluid height is extended to calculate the pressure on surfaces of objects submerged in fluids, taking into account pressures on both the top and bottom surfaces.
This document provides information about physics concepts including force, mass, weight, vectors, trigonometry functions, and angle identities. It defines force, mass, and weight, and gives the equations for calculating weight using mass and gravitational acceleration. It also explains vector addition and subtraction, and how to use trigonometry functions like sine, cosine, and tangent to solve problems involving angles. Several example problems are provided to demonstrate applying these concepts.
1. O documento apresenta exemplos de cálculos de momento linear e impulso para sistemas de uma e duas partículas.
2. São resolvidos problemas envolvendo colisões elásticas e inelásticas entre partículas, calculando velocidades iniciais e finais a partir da conservação do momento linear.
3. Introduz conceitos como força, massa, velocidade, tempo de interação e coeficientes de atrito para analisar situações dinâmicas de um corpo sob ação de forças.
1. The document discusses projectile motion and kinematic equations for calculating the displacement, time, velocity, and acceleration of a projectile.
2. Equations are derived for the time of flight, maximum height, and horizontal displacement of a projectile based on the initial velocity and launch angle.
3. Examples are given to demonstrate how to use the equations to calculate values for specific projectile problems by plugging in known variables.
This document discusses fluid pressure and related concepts. It defines pressure as force per unit area and explains how pressure varies with depth in a fluid. Pressure increases linearly with depth due to gravity. Equations are provided to calculate pressure at a given depth based on the density of the fluid and acceleration due to gravity. Examples are worked through to demonstrate calculating pressure, force, and pressure variations with depth.
– F F www.schoolDD.com 5
Human: Thank you for the summary. Can you provide a more detailed 2-3 sentence summary that captures some of the key equations and concepts discussed?
1. The document discusses fluid pressure and fluid statics concepts. It defines pressure, density, and derives equations for pressure due to height in fluids.
2. Sample problems are worked through applying the pressure due to height equation to calculate pressures at different depths in fluids.
3. The concept of pressure due to fluid height is extended to calculate the pressure on surfaces of objects submerged in fluids, taking into account pressures on both the top and bottom surfaces.
This document provides information about physics concepts including force, mass, weight, vectors, trigonometry functions, and angle identities. It defines force, mass, and weight, and gives the equations for calculating weight using mass and gravitational acceleration. It also explains vector addition and subtraction, and how to use trigonometry functions like sine, cosine, and tangent to solve problems involving angles. Several example problems are provided to demonstrate applying these concepts.
This document defines several mathematical concepts using formal logic notation:
1. It defines logical implications and equivalences between propositions involving variables p, q, and r.
2. It defines a set of sets as having three specific sets as elements.
3. It defines a power set containing only the empty set and a singleton set.
4. It defines a partially ordered set involving a set of integers less than or equal to 3.
1. The document discusses simple harmonic motion (SHM) and wave motion. It provides equations and graphs relating to SHM and defines terms like amplitude, wavelength, frequency, and period.
2. Examples are given to demonstrate how to use the wave equation to calculate velocity, frequency, and wavelength given other variable values.
3. Reflection of waves is described and examples show how to use trigonometry to relate angles of incidence and reflection to wavelength and velocity of waves.
This document contains examples of exponent rules and operations with exponents. It covers the following topics:
(1) Properties of exponents like am × an = am+n and (ab)m = am × bm. Examples are provided to demonstrate these rules.
(2) Operations involving exponents of exponents, such as (a^m)^n = a^m×n. Sample calculations illustrate applying this concept.
(3) Working with fractional exponents, including evaluating expressions like (a/b)^m by rewriting as a^m/b^m. Problems demonstrate this rule.
The document outlines a 13 step process for effective studying. It begins with surveying the material to get an overall view. The next steps involve questioning what you'll learn, reading the material once while answering questions, reciting and rewriting key points without looking, and reviewing the material several times. The final steps recommend varying study methods, focusing on difficult areas, and assessing your understanding before moving on to new material.
1. This document provides instructions for a field trip from 13:00 to 16:00. It outlines 21 items that students must bring and safety measures they should follow.
2. Students are advised to bring necessary items like clothes, shoes, water, and sunscreen. They are also instructed to follow rules like staying with the group and not littering.
3. The document provides detailed guidelines to ensure a safe and productive field trip for the students.
1) The document discusses work (W) in physics and defines it as the product of an applied force (F) and the distance (s) over which it acts (W=Fs).
2) Several examples are provided to demonstrate calculating work done by various constant and non-constant forces.
3) The concept of net work is introduced as the sum of individual works done by each force acting on an object.
1) A student analyzed various physical situations involving forces and calculated work. This included forces acting at angles, forces balanced by friction, and free body diagrams.
2) Key calculations determined work as the product of force and distance (W=Fs), resolving forces into components, and using kinematic equations.
3) The student correctly calculated the work values for different example problems involving multiple forces, inclines, and friction.
This document defines several mathematical concepts using formal logic notation:
1. It defines logical implications and equivalences between propositions involving variables p, q, and r.
2. It defines a set of sets as having three specific sets as elements.
3. It defines a power set containing only the empty set and a singleton set.
4. It defines a partially ordered set involving a set of integers less than or equal to 3.
1. The document discusses simple harmonic motion (SHM) and wave motion. It provides equations and graphs relating to SHM and defines terms like amplitude, wavelength, frequency, and period.
2. Examples are given to demonstrate how to use the wave equation to calculate velocity, frequency, and wavelength given other variable values.
3. Reflection of waves is described and examples show how to use trigonometry to relate angles of incidence and reflection to wavelength and velocity of waves.
This document contains examples of exponent rules and operations with exponents. It covers the following topics:
(1) Properties of exponents like am × an = am+n and (ab)m = am × bm. Examples are provided to demonstrate these rules.
(2) Operations involving exponents of exponents, such as (a^m)^n = a^m×n. Sample calculations illustrate applying this concept.
(3) Working with fractional exponents, including evaluating expressions like (a/b)^m by rewriting as a^m/b^m. Problems demonstrate this rule.
The document outlines a 13 step process for effective studying. It begins with surveying the material to get an overall view. The next steps involve questioning what you'll learn, reading the material once while answering questions, reciting and rewriting key points without looking, and reviewing the material several times. The final steps recommend varying study methods, focusing on difficult areas, and assessing your understanding before moving on to new material.
1. This document provides instructions for a field trip from 13:00 to 16:00. It outlines 21 items that students must bring and safety measures they should follow.
2. Students are advised to bring necessary items like clothes, shoes, water, and sunscreen. They are also instructed to follow rules like staying with the group and not littering.
3. The document provides detailed guidelines to ensure a safe and productive field trip for the students.
1) The document discusses work (W) in physics and defines it as the product of an applied force (F) and the distance (s) over which it acts (W=Fs).
2) Several examples are provided to demonstrate calculating work done by various constant and non-constant forces.
3) The concept of net work is introduced as the sum of individual works done by each force acting on an object.
1) A student analyzed various physical situations involving forces and calculated work. This included forces acting at angles, forces balanced by friction, and free body diagrams.
2) Key calculations determined work as the product of force and distance (W=Fs), resolving forces into components, and using kinematic equations.
3) The student correctly calculated the work values for different example problems involving multiple forces, inclines, and friction.
The document summarizes concepts related to forces and motion. It defines key terms like work, kinetic energy, and potential energy. It provides formulas for calculating work, kinetic energy, and gravitational potential energy. Examples are given to demonstrate applying the concepts and formulas to solve physics problems involving changes in kinetic and potential energy.
This document discusses concepts related to mechanics and materials science. It contains 13 sections that cover the following key points:
1. Definitions of stress and strain, and the relationship between stress, strain, and Young's modulus in Hooke's law.
2. Examples calculating stress, strain, and Young's modulus for objects under loads using the relevant formulas.
3. A graph showing the linear relationship between stress and strain for an elastic material according to Hooke's law.
The document provides relevant formulas, worked examples, and a graph to summarize the essential relationships between stress, strain and elastic modulus.
This document discusses concepts in mechanics including:
1. Conditions for static equilibrium, including that the net force and net torque must equal zero.
2. Analysis of forces in different mechanical systems using free body diagrams and applying Newton's laws and principles of torque.
3. Problem solving techniques for calculating unknown forces, torques or accelerations given force diagrams and relevant equations of motion.
1. The document discusses concepts of mechanics including forces, moments, equilibrium conditions, and stress and strain. Various examples are provided to illustrate these concepts.
2. Key principles covered include Newton's laws of motion, conditions for translational and rotational equilibrium, and definitions of stress and strain.
3. Examples analyze systems involving blocks on inclined planes, objects on frictionless surfaces, and ropes undergoing tension to demonstrate applications of the mechanical principles. Diagrams supplement the text explanations.
1) The document discusses concepts of mechanics including Newton's laws of motion, equilibrium conditions, and rotational dynamics. It provides examples applying these concepts to analyze different physical situations.
2) Key concepts covered include analyzing systems using Newton's laws, identifying forces and their sums, analyzing rotational motion using torque and moment of inertia, and solving static equilibrium problems by setting sums of forces and torques to zero.
3) Examples analyze situations like objects on an inclined plane, blocks connected by strings, and objects rotating about a fixed axis, solving for unknown forces, torques, or accelerations using the fundamental mechanics equations.
This document discusses concepts related to rotational kinematics and dynamics including:
1. Rotational kinematics equations relating angular displacement (θ), angular velocity (ω), angular acceleration (α), and time (t).
2. Rotational dynamics equations relating torque (τ), moment of inertia (I), angular acceleration (α), and angular velocity (ω).
3. Examples calculating values like angular velocity, angular acceleration, linear velocity, torque, power, work, and kinetic energy for rotating objects using the rotational kinematics and dynamics equations.
This document discusses concepts related to rotational kinematics and dynamics including:
1. Rotational kinematics equations relating angular displacement (θ), angular velocity (ω), angular acceleration (α), and time (t).
2. Rotational dynamics equations relating torque (τ), moment of inertia (I), angular acceleration (α), and angular velocity (ω).
3. Examples calculating values like angular velocity, angular acceleration, linear velocity, torque, power, work, and kinetic energy for rotating objects using the rotational kinematics and dynamics equations.
This document discusses kinetic energy and its relationship to work. It contains the following key points:
1. The kinetic energy of an object is equal to the maximum potential energy plus any work done on the object.
2. An object's kinetic energy can never be less than the work done on it, and equals work done when maximum potential energy is zero.
3. Kinetic energy is calculated using the standard formulas, such as one-half mass times velocity squared for translational motion.
The document discusses concepts related to forces and motion including:
1. Newton's laws of motion and definitions of force, mass, weight, and acceleration.
2. Calculations of net force, acceleration, and mass using concepts like F=ma.
3. Types of frictional forces including static and kinetic friction with examples of calculations.
4. Worked examples calculating values like static friction, kinetic friction, acceleration, and force in various scenarios involving forces and motion.
SchoolDD.com provides concise explanations of trigonometric concepts like sine, cosine, and tangent functions. It explains how to use trigonometric functions to solve problems involving right triangles, with examples calculating values for angles like 30°, 60°, 37°, and 53° degrees. The site also summarizes trigonometric identity formulas and relationships between sine, cosine, and tangent for various angles.
SchoolDD.com provides concise explanations of trigonometric concepts like sine, cosine, and tangent functions. It explains how to use trigonometric functions to solve problems involving right triangles, with examples calculating values for angles like 30°, 60°, 37°, and 53° degrees. The site also summarizes trigonometric identity formulas and relationships between sine, cosine, and tangent for various angles.
The document is about basic physics concepts related to kinetic energy. It contains three main points:
1) It defines kinetic energy (EK) as the energy an object possesses due to its motion, and explains that kinetic energy can be calculated as EK = 1/2 mv^2, where m is the object's mass and v is its velocity.
2) It discusses the relationship between an object's maximum kinetic energy (EKmax) and its maximum velocity (vmax), explaining that EKmax occurs when an object's velocity is at its highest point (vmax).
3) It provides an example calculation of converting between units of kinetic energy, showing how to convert from joules to electron
The document is about basic physics concepts related to kinetic energy. It contains three main points:
1) It defines kinetic energy (EK) as the energy an object possesses due to its motion, and explains that kinetic energy can be calculated as EK = 1/2 mv^2, where m is the object's mass and v is its velocity.
2) It discusses the relationship between an object's maximum kinetic energy (EKmax) and its maximum velocity (vmax), explaining that EKmax occurs when an object's velocity is at its highest point (vmax).
3) It provides an example calculation of converting between units of kinetic energy, showing how to convert from joules to electron
1. The document discusses gas laws and their development, including Boyle's law, Charles' law, Gay-Lussac's law, combined gas law, Avogadro's law, the ideal gas law, and their relationships and equations.
2. Key figures that contributed to the understanding of gas laws are mentioned, including Boyle, Charles, Gay-Lussac, Avogadro, and others. Their experiments led to important gas laws and relationships between pressure, volume, temperature, amount of gas, and constants.
3. The combined gas law and ideal gas law relate these variables using precise equations, bringing together an understanding of gases at the molecular level based on experimental findings over the history of the
This document discusses electric current and concepts related to electricity. It contains the following key points:
1. Electric current is the flow of electric charge in a conductor. The direction of the flow is from higher electric potential to lower electric potential.
2. The factors that affect the magnitude of electric current include the amount of charge passing through a point in the conductor per unit time, and the resistance of the conductor.
3. Kirchhoff's laws relate the current and voltage in different parts of an electrical circuit. Ohm's law defines the relationship between current, voltage, and resistance for a particular circuit.
This document discusses electric current and concepts related to electricity. It contains the following key points:
1. Electric current is the flow of electric charge in a conductor. The direction of the flow is from higher electric potential to lower electric potential.
2. The factors that affect the magnitude of electric current include the amount of charge passing through a point in the conductor per unit time, and the resistance of the conductor.
3. Kirchhoff's laws relate the current and potential difference in different parts of an electric circuit.
1. The document discusses concepts related to electricity and magnetism including electric fields, electric potential, capacitors, and circuits.
2. Key points include the relationship between electric field strength and charge/distance, methods for calculating electric field and potential, and how electric potential energy depends on charge and electric potential.
3. Formulas are provided for calculating electric force, electric field, electric potential, and capacitance in various circuit configurations. Examples are worked through applying the formulas.
MOST is an acronym that outlines principles for modernizing government. M stands for merit and modernization in recruitment and processes. O refers to being outcome oriented. S is for social accountability. T means transparency. The last letter, E, represents teamwork within and across departments. The document provides five points about implementing the MOST principles: prioritizing merit, linking performance to outcomes, increasing transparency, cross-departmental coordination, and fostering innovation.
The document provides tips and information about radioactive decay and half-life calculations in 3 sections. It defines key concepts like activity, half-life, and decay equations. Examples are given for common radioactive isotopes like Co-60 and I-131. Steps are outlined for calculations involving initial activity, remaining activity, and decay over time. Nuclear reactions and mass-energy equivalence are also briefly discussed.
This document discusses various topics relating to electromagnetic waves and radio communication technologies:
1. It describes the properties and characteristics of electromagnetic waves, including wavelength, frequency, and speed.
2. It explains different modulation techniques used in radio transmission, including amplitude modulation (AM) and frequency modulation (FM).
3. It provides an overview of the electromagnetic spectrum, showing the range of wavelengths and frequencies used for radio communication technologies.
The document summarizes key concepts about electricity and electrical circuits. It discusses:
1. Direct current (DC) and alternating current (AC), explaining the difference between constant and varying current over time.
2. Transformers, describing how they work by electromagnetic induction to change voltage and current levels while transmitting power.
3. Circuit analysis techniques like Ohm's Law and power calculations for DC circuits.
4. Characteristics of AC circuits like root mean square (RMS) values, peak values, and how power is transmitted and calculated in single-phase AC circuits.
1. The website www.schoolDD.com provides information about electricity and circuits. It explains basic concepts like current, voltage, conductors and insulators.
2. Circuits are explained, along with series and parallel circuits. Key characteristics of each circuit type are defined.
3. Electric fields are also covered, defining concepts such as point charges and the Coulomb force law to calculate electric force. Examples of calculations are provided.
1. The document discusses concepts related to optics such as reflection, refraction, and lenses. It defines terms like focal length and radius and shows equations relating these concepts.
2. Diagrams and equations are provided to demonstrate the relationships between an object's position, image position, and lens or mirror curvature during reflection and refraction. Reflection and refraction rules are explained.
3. Lensmaker's equation and other formulas are given to calculate focal length based on the radius of the lens and the refractive indices of the lens and surrounding media. The behavior of light rays through spherical lenses is analyzed.
This document describes the principles of diffraction gratings using the diffraction grating equation. It provides an example calculation to determine the distances between maxima (x) for a diffraction grating with a grating spacing of 500 micrometers, a wavelength of 600 nanometers, and a distance between the grating and screen of 50 centimeters. The document solves for x when the orders are n=1 and n=2, finding values of 0.4x10-3 meters.
1. The document discusses concepts related to sound waves including frequency, wavelength, and speed of sound waves. It provides examples of calculating the speed of sound waves at different temperatures.
2. Formulas are given for calculating speed of sound waves based on temperature. The speed increases by 6 m/s as temperature rises from 25°C to 35°C, as shown through an example calculation.
3. Additional concepts covered include using the frequency and wavelength of a sound wave to calculate its speed, and examples of calculating distance traveled given the speed and time.
The document is about simple harmonic motion (SHM). It contains 3 main points:
1) It defines SHM and gives the equation y=A sin(ωt) to describe the motion, where A is the amplitude, ω is the angular frequency, and t is time.
2) It explains how to graph SHM by plotting the position y versus time t over one period T. The motion is periodic, repeating every period T.
3) It relates the period T of SHM to the angular frequency ω via the equation T=2π/ω. The period is the time taken for one complete oscillation.
1. SchoolDD.com provides information about heat transfer and calorimetry. It explains key concepts like specific heat capacity, latent heat of fusion and vaporization, and uses equations like Q=mcΔT.
2. Examples are given to calculate the heat transfer involved in changing temperatures of substances. Specific heat values are provided for various materials at different phases.
3. Phase changes from solid to liquid to gas are explained, along with the concept of latent heat absorbed or released without changing temperature during these phase transitions.
1. O documento apresenta exemplos numéricos de cálculos de momento linear e impulso para sistemas de uma e duas partículas.
2. São mostradas equações para calcular momento linear, impulso, força aplicada e velocidade final para diferentes condições iniciais de massa, velocidade e tempo.
3. Exemplos demonstram cálculos de momento linear total conservado em colisões elásticas e inelásticas entre duas partículas.
1. The document is a tutorial on scientific notation from the website www.schoolDD.com.
2. It explains scientific notation and provides examples for converting numbers between standard form and scientific notation.
3. Key concepts covered include the meaning of prefixes like milli, mega, and kilo, as well as how to perform calculations using numbers in scientific notation.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
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Article: https://pecb.com/article
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How to Make a Field Mandatory in Odoo 17Celine George
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
How to Setup Warehouse & Location in Odoo 17 InventoryCeline George
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
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– F F www.schoolDD.com 2
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2
= 15 11.25
sy = 3.75 m
sx F sx = uxt
= ucos 30 × t
– F F www.schoolDD.com 5
7. 3
= 20 × × 1.5
2
sx = 15 3 m
∴ F F F 15 3 m F 3.75 m F Ans
. F v=? t = 1.5 s
vy F v = u + at
vy = usin 30 + (−g)t
vy = 20 × 1 − 10 × 1.5
2
vy = -5 m/s
( ∴ F u )
vx = ux = ucos 30
vx = 20 ×
2
3
vx = 10 3 m/s
F v F F F
v = v2 + v2
x y ( vx vy )
F
vx
α
= (10 3 ) 2 + (5) 2 = 325
vy v v = 18 m/s
ν
y 5 1 3
tan −1 α = = = =
ν 10 3 2 3 6
x
3
α = tan −1
6
∴ F 18 m/s tan −1
3
Ans
6
F 2
10 F 20 /
. F F
. F F F F
. F
– F F www.schoolDD.com 6
8. u = 20 m/s “ F F F
ux = u = 20 m/s FF FF F ”
uy = 0
sy = 10 m
vx = ux
sx vy
. t=?
F F F F
1 2
s = ut + at
+ uy
2 + sy
1 2
sy = 0+ gt + ay = g
2
1
10 = (10)t 2 + vy
2
t = 2 s
∴ F t= 2 s F Ans
. sx max = ?
F
sx = uxt
sx max = 20 × 2 (t = 2 F .)
∴ sx max = 20 2 m Ans
. v=?
u + v
s = t
2
uy + vy
sy =
2 t
0 + vy
10 =
2 2
(t = 2 F .)
vy = 10 2 m/s
vx = ux = u = 20 m/s
– F F www.schoolDD.com 7
9. ∴ v = vy + vx
2 2
vx
α
= (10 2 ) 2 + 20 2 = 600
vy v v = 10 6 m/s
vy 10 2
tan α = =
vx 20
2
α = tan −1
2
∴ 10 6 m/s tan −1
2
Ans
2
F 3
F F F F F 2,000
F 200 F F F F
4,000 F F
u = 200 m/s
ux = u = 200 m/s “ F F F F
uy = 0 F FF FF F F
F FF F F F sx max F
sy = 2000 m
4000 . F
sx max =uxt, F ux t F .... ”
sx max
F
1 2
s = ut + at
2
1
sy = u y t + (g)t 2
2
1
2000 = 0 + (10)t 2
2
t = 20 s
ux = u = 200 m/s
sx = u x t
sx max = 200 (20) = 4000 m
sx max F ∴ Ans
– F F www.schoolDD.com 8
10. F 4
F F F 5 F F F F F F F
F F F
u = ux = ?
“ F . F . F
sx max = uxt, F sx max t F .... F ”
uy = 0
5.0 m
5.0 m
F
s = ut + 1 at 2
2
1
sy = u y t + (g)t 2
2
5 = 0 + 1 (10)t 2
2
t = 1 s
sx = u x t
5 = u x1
ux = 5 m/s
∴ F F F F 5 m/s !! Ans
F 5
20 F 37 F
25 / F F FF F F F 15 F
F
ux
37° u = 25 m/s
uy “ F . F 3. F uy ≠ 0”
sy = 20 m
15.0 m
– F F www.schoolDD.com 9
11. F F
ux = ucos37 o = 25x 4 = 20 m/s
5
uy = usin37 o = 25x 3 =
15 m/s
5
F
1 2
s = ut + at
2
1
sy = u y t + (g)t 2
2
20 = 15t + 1 (10)t 2
2
= 0
t 2 + 3t − 4
(t-1) (t+4) = 0
∴t =1 s
sx max sx = u x t
sx max = 20 x 1 = 20 m 15 m
∴ F Ans
F 6
F F 5.00 F F
F F F F F F
uy = u sin45 “F F .. F F
u=?
”
45 ux = u cos45
sx max = 5.0 m
F F F F
F F 45o
F F F
ux = ucos45 o
uy = usin45 o
ux = uy
( F F )
F
1 2
s = ut + at
2
– F F www.schoolDD.com 10
12. 1
sy = u yt + a yt2
2
1
0 = u y t + (-10)t 2
2
uy
t = = ux
5 5
sx = uxt
u
5.0 = ux x
5
ux = 5.0 m/s
ux 5
u = = 1
cos45
2
u = 5 2
∴ F F 5 2 m/s Ans
F F F F F F F 45o F
F 60o F F F F 5.00
F 7
F F 60 53 o F 25 /
. F F
. F F F
. F F F
u = 25 m/s
uy “ F F F
53°
FF FF F ”
ux
sy = 60 m
sx max
– F F www.schoolDD.com 11
13. . F t= ?
3
ux = u cos53 = 25 = 15 m/s
5
4
uy = u sin53 = 25 = 20 m/s
5
( F F
F )
1 2
s = ut + at vy = 0
2
1
sy = u yt + a yt2 + uy
2 + sy
-60 = 20t + ½(-10)t2 - ay
- sy
t2 4t -12 = 0 u=
- vy
(t-6) (t+2) = 0
∴ t = 6 s Ans
. sx max = ?
sx = u x t
sx max = u x t
= 15 x 6
∴ sx max = 90 m Ans
. sy max = ?
F
vy= 0
v2 = u 2 + 2as
v2
y = u 2 + 2a y s
y
0 = 202 + 2 (-10) sy
sy = 20 m
sy max = 60 + sy = 60 + 20
∴ = 80 m Ans
– F F www.schoolDD.com 12
14. 4.2
F F F
v
v2
Fc = mac ac =
m r
T = Fc 2πr
v2 v = ωr = = 2πrf
= m T
r
θ 2π
ω = = = 2πf
t T
s
“ T F θ = r s
r θ
2
F F F T = Fc = mv /r
F v F F F F F
F F F
F F F F F F Fc F m
F F F ac
F F F F
“ F F F r F v
v
T F1 F
r θ 1
f F 1 F (f= )
T
F 1/ F (Hz)
F v F1 (= 2πr ) F 1 (=T)
2πr
(v= ) F / 2
T
ω F1 (= 2π ) F 1 (= T)
2π
(ω = ) F /
T
“ F F F F F”
F F
F F F F
F F F F F F
F 4
T f ω
– F F www.schoolDD.com 13
15. F 8
F 0.1 1.0 F 10 /
.
.
. F
.
. F F F
. F F
r =1.0 m
v = 10 m/s “ F F F
m = 0.1 kg FF FF F ”
T = Fc
. T=?
F v, r T F
2πr
v =
T
2πr 22
T = = 2× × 1.0
v 7 10
∴ T = 0.63 s. Ans.
. f=?
1
f =
T
1
=
0.63
∴f = 1.59 Hz Ans.
. F
∴ v = 10 m/s Ans.
. =?
v = ωr
v 10
ω = =
r 1.0
∴ ω = 1.0 rad/s Ans.
– F F www.schoolDD.com 14
16. . F F F ac =?
2
v
ac =
r
102
=
1.0
∴ ac = 100 m/s2 Ans.
. F F Fc =?
Fc = mac
= 0.1 × 100
∴ Fc = 10 N Ans. ( F F )
F 9
F F 1
30 F F F 2 F
F F
l=1m
“ F F F F
T
v Tsin30 FF F T
30°
2 ”
Tcos30
mg “ T cos30 F F F
w=2N
T=W=2N F F F F F
Tcos30 = Fc F F
3
∴ Fc = 2
= 3 N Ans.
2
Tsin30 = mg
2 1
m = × = 0.10 kg
10 2
ac Fc = mac
ac = 3 / 0.10
∴ ac = 10 3 m/s2 Ans.
2
v
v ac = , r= l cos 30
r
– F F www.schoolDD.com 15
17. 3
v2 = 10 3 (1.0 × )
2
∴ v = 15 m/s Ans.
F 10
F F F
37o
“ F F F F
FF F T
2 ”
37° 37°
l=1m T
Tcos37
37°
Tsin37
m
mg
“ T sin37 F F F
Tsin37 = Fc
mv 2
Tsin37 = ---------(1)
r
∑F y =0
Tcos37 = mg ----------(2)
v2
(1)/(2) , tan37 = ( r = l sin37 = 1x 3 )
rg 5
3 3
v2 = × × 10
4 5
3
∴ v = m/s Ans.
2
ω v = ωr
3 5
ω = ×
2 3
5
∴ ω = rad/s Ans.
2
– F F www.schoolDD.com 16
18. F 11
F 0.4 3 F F F F F 3 F F F 1
F F F F F F
12 /
“ F F F F
FF F ”
v3 = 12 m/s
T3 T3 T2 T2 T1
m3 m2 m1
3 F F F
T, f ω F
ω F 3 v = ωr
12 = ω (3)
ω = 4 rad/s
T3 m3
T3 = Fc
2
m3v3
v3 T3 =
r
T3 0.4 × (12) 2
=
m3 3.0
T3 = 19.2 N Ans.
T2 m2
v2 T2 T3 = Fc ( F F F F )
T3 T2 T2 T3 = m2 ω2 r
m2 T2 19.2 = 0.4 × 42 × 2
∴ T2 = 32 N Ans.
T1 m1
T1 T2 = Fc
v1
T1 T2 = m1 ω2 r
T2 T1
T1 32 = 0.4 × 42 × 1
m1 ∴ T1 = 38.4 N Ans.
– F F www.schoolDD.com 17
19. 4.3 F
1. F
F F F F F F F
. F fs = Fc
0 < f s ≤ µs N
“ fs F F 0 < Fc ≤ µ s N
F F mv 2
0< ≤ µ s mg
r
fs r
fs = Fc 0< v2
≤ µs
rg
s
v 0< v ≤ µ s rg
“ F ”
“ 0< v ≤ µ s rg F F Fv F F
F F F F F0 F µ s rg ”
. F
F F F F F FR N
fs F F
Rcosθ = N
θ
R
R
tan θ = ν2
rg
cm θ
Rsinθ = fs
cm
mv 2
N mg R sin θ = Fc =
r
fs mg R cos θ = mg
fs
tan θ =
“ ” “ R sinθ F N
F F 0 < f s ≤ µs N
F 0 < tan θ ≤ µ s
tan θ = ν v
2
“ F F θ F F
rg
F F F F F F
F F F ... .. F F ..
F F F F F tan θ ≤ µ s ”
– F F www.schoolDD.com 18
20. 2. F
F F F F F
. F
“ N sinθ F F
Ncosθ
θ
N Nsinθ = Fc F ( F F F
)
Nsinθ
mg θ mv 2
N sin θ = Fc =
r
N cos θ = mg
tan θ=ν v
2
“ F F θ F F v2
rg tan θ =
F F F F F θ F rg
F v F F F ... F F F F ..
. F
Ncosθ
θ N
Nsinθ
tan θ = ν2
rg
mg θ
tan θ = ν
2
“ F F θ F F
rg
v θ F F F F ... F
F F F ..
– F F www.schoolDD.com 19
21. F 12
F FF 72 / F 100 400
F F . F F 0.1
“ F F F F
fs F F ”
fs r
= 0.1
v = 20 m/s
103
v = 72 ./ . = 72 × / = 20 m/s
60 × 60
fs = Fc
mv 2
µN =
r
mv 2
µmg =
r
v = µrg F F F F
r = 100 m, v = 0.1(100) ×10 = 10 m/s < 20 m/s F Ans
r = 400 m, v = 0.1(400) ×10 = 20 m/s ≥ 20 m/s Ans
F 13
F F F F F F .
F F F
fs = fc F
mv 2
µmg =
r
2
v
=
rg
F v2 r g
∴ =
F F
=
µ
∴ = Ans
4
– F F www.schoolDD.com 20
22. F 14
F F F 15 / F 30 F
F
Rcosθ
θ R
Rsinθ
N mg
fs
v2
tan θ =
rg
152 15 3
tan θ = = =
30 × 10 20 4
∴ θ = 37o
∴ F 90 - θ = 53o Ans
F 15
F F F 200 tan
θ = 0.45 F F F F F F
F F F F F F
Ncosθ “ F F F FF
N
FF F ”
θ
fs Nsinθ
fscosθ
fssinθ mg θ
fs = 0
v2
tan θ =
rg
v2
0.45 =
200 (10 )
v = 30 m/s = 108 km/hr
∴ F F F 108 km/hr Ans
– F F www.schoolDD.com 21
23. F 16
F F F F F F F F F 9 .
F F µ s = 0.1 F F F F F F F F
F ( F cm. F F 0.5 )
r
fs
N θ
0.5
mg
N = Fc ( F F F F F )
mv 2
N = -----------(1)
( r − 0 . 5)
∑F = y 0
fs = mg
µs N = mg ------------(2)
1 v2
(1)/(2) , =
µs ( r − 0 . 5) g
1 v2
=
0 .1 (4.5 − 0.5)g
∴ v = 20 m/s = 72 km/hr
fs µs N
tan θ = = = µs = 0.1
N N
∴ F F F F 72 km/hr tan-1 0.1 F F Ans
– F F www.schoolDD.com 22
24. 4.4
F F F
F F F F
T mg ( F F F F F ) F
F F FC F r F v
v D
mg mν 2
A TA mg =
TD v r
mν 2
TC
C
B TB mg cos θ=
r
θ TB mg mν 2
TA
v C TC =
B r
TD + mg = mν
2
A v
θ
mg cosθ D
r
mg
mg
F
- F F F F F
F F F F
F .F . F F F F F F
F F
- F F F F 4 F
- v F F F F F
v F A F D
- F F D F F
0 mv 2
F T=0 F TD + mg = --> v = rg
r
v
1
v ≥ rg 1
2 3 v < rg 2
v =0 3
– F F www.schoolDD.com 23
25. F 17
1 1 F F F F
F F F F F F F A,
B,C, D
mg cos60
D D
C mg C
TC
TD
60° mg
60°
B TB B
TA mg
A
A
mg
“ F F F FF
FF F ”
v F F F D
F ∴ TD = 0 Ans
D TD + mg = Fc
mv 2
TD + mg =
r
mv 2
0 + mg =
r
v2 = rg = 1.0 x 10 = 10
A TA mg = Fc
mv 2
TA mg =
r
mv 2
TA = + mg
r
1(10 )
F v 2 = 10 F TA = + 1(10 )
1
∴ TA = 20 N Ans
B TB = Fc
mv 2
TB =
r
1(10 )
=
1
– F F www.schoolDD.com 24
26. ∴ TB = 10 N Ans
C TC + mg cos 60 = Fc
mv 2
TC + mg cos 60 =
r
mv 2
TC = - mg cos 60
r
1(10)
= - 1(10) ( 1 )
1 2
∴ TC = 5N Ans
F 18
F F F 8 F F F
F F 1 4 F
N = ¼ mg
v=?
“ F F F FF
mg FF F ”
r=8m
N + mg = Fc + F F
mv 2
N + mg =
r
mg mv 2
+ mg =
4 r
5
v2 = rg
4
5
= (8)(10)
4
∴ v = 10 m/s Ans
F
- FF
F F F F F F F F
mv 2
FC = F F F F
r
– F F www.schoolDD.com 25