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The document defines pressure as the force exerted per unit area. It provides the basic formula for pressure as force divided by area (F/A) with the unit being pascals (Pa). Solid pressure is defined as the force acting per unit area on a solid. An example calculation is shown to find the pressure when a given force is applied over an area. A second example calculates the pressure exerted by a rectangular block of given mass, length, width and height.
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Form 4 forces and-pressure[1]
The document discusses pressure and related concepts in physics. It begins by defining pressure as force per unit area. It then provides formulas for calculating pressure, such as pressure = force/area. It discusses several principles related to pressure, including:
- Pascal's principle, which states that pressure exerted on an enclosed liquid is transmitted equally in all directions throughout the liquid.
- Archimedes' principle, which states that the buoyant force on an object immersed in a fluid is equal to the weight of the fluid displaced by the object.
- Bernoulli's principle, which relates pressure and velocity in fluids such that high velocity means low pressure and vice versa in steady fluid flow.
The document provides
5116 pressure slides ed
This chapter discusses pressure and its relationship to force and area. Pressure is defined as force per unit area, with the formula P=F/A. Several examples are provided to demonstrate calculating pressure given the force and contact area. Quizzes throughout assess understanding of key concepts like how elephants and ladies exert different pressures due to differences in their contact areas.
Chap8_Sec3.ppt
This document discusses applications of integral calculus to physics and engineering problems involving force, pressure, and centers of mass. It provides examples of using integrals to calculate the hydrostatic force on structures like dams and cylinders submerged in water. It also explains how to find the center of mass of an object or system of point masses by taking moments about axes and dividing by total mass. Formulas are given for calculating hydrostatic pressure, moments, and centers of mass in one and two dimensions.
class 11 physics work energy and power study material free pdf download
class 11 physics work energy and power study material free pdf downloadVivekanand Anglo Vedic Academy
Welcome to the fascinating world of Work, Energy, and Power! In the realm of physics, these concepts form the cornerstone of understanding how objects interact with each other and how energy is transformed within systems. From the motion of everyday objects to the dynamics of celestial bodies, the principles of work, energy, and power are ubiquitous, shaping the very fabric of the universe.
For more information, visit-www.vavaclasses.comWork
Work is defined as a force causing an object to move over a distance parallel to the force. The SI unit for work is the joule, which is equal to 1 newton-meter. Work is measured by multiplying the applied force by the displacement distance. Examples of work include lifting a weight off the ground and pushing a heavy cart over a distance.
311 Ch11
1) Poisson's ratio describes the strain in the perpendicular direction due to loading. Under uniaxial loads, the perpendicular strain is proportional to the parallel strain multiplied by Poisson's ratio. Under biaxial loads, the strains are calculated considering the effects of both loads.
2) Thermal expansion causes materials to expand or contract with changes in temperature. Temperature changes can also induce thermal stresses if expansion is constrained.
3) Composite members made of different materials experience stress based on their relative moduli of elasticity. The stress in each material is proportional to the other by their modular ratio.
Work
- Work is done when a force causes an object to move in the direction of the force. No work is done if there is no movement.
- Work (W) is calculated as the product of the magnitude of the force (F) and the magnitude of displacement (d) in the direction of the force.
- Power is the rate at which work is done and is calculated as work (W) divided by time (t). It is measured in watts, with 1 watt equaling 1 joule per second.
6 newton law and gravitation
This document summarizes key points from a Physics 111 lecture on Newton's laws of motion. It recaps centripetal acceleration and introduces Newton's three laws: (1) objects in motion stay in motion unless acted on by an external force, (2) force equals mass times acceleration, and (3) for every action there is an equal and opposite reaction. Examples are provided to illustrate applying Newton's second law to calculate acceleration from force and mass. Gravity is discussed as an example of a force that acts at a distance.
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Form 4 forces and-pressure[1]
The document discusses pressure and related concepts in physics. It begins by defining pressure as force per unit area. It then provides formulas for calculating pressure, such as pressure = force/area. It discusses several principles related to pressure, including:
- Pascal's principle, which states that pressure exerted on an enclosed liquid is transmitted equally in all directions throughout the liquid.
- Archimedes' principle, which states that the buoyant force on an object immersed in a fluid is equal to the weight of the fluid displaced by the object.
- Bernoulli's principle, which relates pressure and velocity in fluids such that high velocity means low pressure and vice versa in steady fluid flow.
The document provides
5116 pressure slides ed
This chapter discusses pressure and its relationship to force and area. Pressure is defined as force per unit area, with the formula P=F/A. Several examples are provided to demonstrate calculating pressure given the force and contact area. Quizzes throughout assess understanding of key concepts like how elephants and ladies exert different pressures due to differences in their contact areas.
Chap8_Sec3.ppt
This document discusses applications of integral calculus to physics and engineering problems involving force, pressure, and centers of mass. It provides examples of using integrals to calculate the hydrostatic force on structures like dams and cylinders submerged in water. It also explains how to find the center of mass of an object or system of point masses by taking moments about axes and dividing by total mass. Formulas are given for calculating hydrostatic pressure, moments, and centers of mass in one and two dimensions.
class 11 physics work energy and power study material free pdf download
class 11 physics work energy and power study material free pdf downloadVivekanand Anglo Vedic Academy
Welcome to the fascinating world of Work, Energy, and Power! In the realm of physics, these concepts form the cornerstone of understanding how objects interact with each other and how energy is transformed within systems. From the motion of everyday objects to the dynamics of celestial bodies, the principles of work, energy, and power are ubiquitous, shaping the very fabric of the universe.
For more information, visit-www.vavaclasses.comWork
Work is defined as a force causing an object to move over a distance parallel to the force. The SI unit for work is the joule, which is equal to 1 newton-meter. Work is measured by multiplying the applied force by the displacement distance. Examples of work include lifting a weight off the ground and pushing a heavy cart over a distance.
311 Ch11
1) Poisson's ratio describes the strain in the perpendicular direction due to loading. Under uniaxial loads, the perpendicular strain is proportional to the parallel strain multiplied by Poisson's ratio. Under biaxial loads, the strains are calculated considering the effects of both loads.
2) Thermal expansion causes materials to expand or contract with changes in temperature. Temperature changes can also induce thermal stresses if expansion is constrained.
3) Composite members made of different materials experience stress based on their relative moduli of elasticity. The stress in each material is proportional to the other by their modular ratio.
Work
- Work is done when a force causes an object to move in the direction of the force. No work is done if there is no movement.
- Work (W) is calculated as the product of the magnitude of the force (F) and the magnitude of displacement (d) in the direction of the force.
- Power is the rate at which work is done and is calculated as work (W) divided by time (t). It is measured in watts, with 1 watt equaling 1 joule per second.
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This document summarizes key points from a Physics 111 lecture on Newton's laws of motion. It recaps centripetal acceleration and introduces Newton's three laws: (1) objects in motion stay in motion unless acted on by an external force, (2) force equals mass times acceleration, and (3) for every action there is an equal and opposite reaction. Examples are provided to illustrate applying Newton's second law to calculate acceleration from force and mass. Gravity is discussed as an example of a force that acts at a distance.
3 0forcesandpressureteachercopy-130415001601-phpapp01
Pressure is defined as force per unit area. Three key points about pressure in gases are:
1) Gas pressure is caused by molecular collisions with container walls.
2) Atmospheric pressure is caused by the weight of the air above.
3) Gas pressure and atmospheric pressure can be measured using instruments like bourdon gauges, manometers, barometers.
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1. Work done by a constant force depends on the magnitude of the force and the displacement along the direction of the force. Work done by opposing forces is negative. Centripetal forces do no work as they are always perpendicular to motion.
2. The work-kinetic energy theorem states that the work done on an object equals its change in kinetic energy. It can be used to calculate changes in speed.
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Newton's first law states that an object will remain at rest or in constant motion unless acted upon by an external force. Newton's second law relates the net force on an object to its acceleration. Newton's third law states that for every action force there is an equal and opposite reaction force. This chapter provides examples of applying Newton's laws to calculate accelerations and tensions in strings for simple systems involving masses, surfaces, and strings. Free-body diagrams are used to represent the forces acting on objects.
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The document provides information about pressure, including defining pressure as the force applied over an area. It states that pressure can be increased by increasing force or decreasing area, and provides examples of calculating pressure using the pressure equation of pressure = force/area. The success criteria outline being able to name what affects pressure, calculate pressure, explain what affects pressure, rearrange the pressure equation, and explain how force and area affect pressure.
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This document discusses elasticity and harmonic motion. It analyzes how forces affect the elastic properties of materials and the nature of oscillatory motion. Simple harmonic motion is described as motion where the restoring force is proportional to displacement from equilibrium. The period of oscillation depends on the mass and spring constant. Examples are given of using harmonic motion to measure an astronaut's mass in orbit by having them sit in a spring-mounted chair and observing the period of oscillation.
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The document describes analyzing a four bar truss to determine its deformation, maximum stress, and reaction forces. The truss is made of elements that each have a modulus of elasticity of 29.5 GPa and cross-sectional area of 1 square meter. The results show a deformation of -22.25 mm, a stress of 4167 N/mm^2, and reactions forces of Fx = 4167 N and Fy = 3126 N. These results are then validated by comparing to results from ANSYS simulations.
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- 1. Pressure
- 2. Aim : The concept of Pressure 2 Define the term pressure in terms of force and area Recall and apply the relationship pressure = force / area to new situations or solve related problem
- 3. Pressure Pressure is defined as the physical force exerted on an object. The force applied is perpendicular to the surface of objects per unit area. The basic formula for pressure is F/A (Force per unit area). Unit of pressure is Pascals (Pa). 3
- 6. “ Solid Pressure is defined as the force acting per unit area 6
- 7. THIS IS A SLIDE TITLE ⬢ Here you have a list of items ⬢ And some text ⬢ But remember not to overload your slides with content Your audience will listen to you or read the content, but won’t do both. 7
- 8. Formula of Solid Pressure 8 𝑃 = 𝐹 𝐴 Pressure (N/m2 or Pascal) Force (Newton) Area (m2)
- 10. Question 2
- 11. Question 1 11 Calculate the pressure in the unit of Pa when 7.6 N of force is applied to 56 m2 of area. Answer : Force (F) = 7.6 N Area (A) = 56 m2 𝑃 = 𝐹 𝐴 = 7.6 56 = 0.13 𝑃𝑎𝑠𝑐𝑎𝑙
- 12. Question 2 12 A rectangular block 50 cm by 10 cm by 20 cm has a mass 40 kg. Determine the pressure that is exerted by the block when it is place on one face 50 cm 10 cm 20 cm
- 13. Explanation Question 2 13 Answer : Mass (m) = 40 kg Length (L) = 50 cm = 50 x 10-2 m Width (W) = 10 cm = 10 x 10-2 m Height (H) = 20 cm = 20 x 10-2 m Step 1 (Find Force With weight) F = mass x gravitation F = 40 kg x 10 kg/m2 F = 400 N Step 2 (Find Area From Rectangular Block) Area = length x width Area = (50 x 10-2 m) x (20 x 10-2 m) Area = 1000 x 10-2 = 10 m Step 3 (Find Pressure) 𝑃 = 𝐹 𝐴 = 400 10 = 40 𝑃𝑎𝑠𝑐𝑎𝑙
- 14. THANK YOU 14