workenergyandpowerppt-131208202046-phpapp02.pptx
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The document discusses key concepts of work, energy, and power including: 1) Defining work, energy, power and their formulas; 2) Calculating kinetic and potential energy using their formulas; 3) Stating the principle of conservation of energy that energy cannot be created or destroyed, only converted from one form to another; 4) Describing conversions between kinetic and potential energy in examples.
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Work, energy and power ppt
The document outlines key concepts related to work, energy, and power including defining these terms, calculating kinetic and potential energy using formulas, stating the principle of conservation of energy as it relates to the conversion of energy forms, applying these concepts to solve related problems, and calculating mechanical system efficiency. The goal is to understand these fundamental physics concepts and be able to measure, calculate and apply work, energy and power.
Work and Energy.pptx [repaired]
1) The document discusses work, energy, and their relationship through the work-energy theorem. It defines work as the product of force and displacement and distinguishes between different types of work.
2) Kinetic energy and potential energy are also defined. Kinetic energy is defined as 1/2 mv^2 and potential energy as mgh.
3) The principle of conservation of energy is explained, stating that the total energy in a system remains constant, and energy can change forms but not be created or destroyed.
4) Examples are provided to demonstrate calculating work, kinetic energy, and potential energy in different scenarios. The work-energy theorem is also illustrated as showing the relationship between change in kinetic and
WEEK_7_WORKPOWER_AND_ENERGY_PPT.pptx
Work is the amount of energy transferred by a force acting on an object through a distance in the direction of the force. For work to be done, there must be a force acting on an object, the object must be displaced some distance, and the force must be parallel to the displacement. Power is the rate at which work is done, or the amount of work done per unit of time. Energy is the ability to do work and exists in various forms, including kinetic energy from motion and potential energy from position or stress. The document provides examples of calculating work, power, kinetic energy, potential energy, elastic potential energy, momentum, and impulse based on given values.
Chapter 4 work, energy and power
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The document contains an ecumenical prayer in Tagalog requesting God's guidance in their studies and to develop virtues as good citizens. It ends with "Amen".
It then outlines the vision of the Tomas Claudio Colleges Basic Education Department to provide quality basic education to develop responsible citizens and uphold leadership in technology.
The mission is then stated as offering quality instruction to prepare learners for the modern world, developing God-loving, creative and dedicated students to safeguard national resources.
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This document discusses work, energy, and power. It defines work as force applied over a distance, and explains that work is calculated as force times distance. It also discusses how work can be positive, negative, or zero depending on the direction of force relative to motion. The document then explains how work relates to changes in kinetic energy, and introduces the kinetic energy and gravitational potential energy formulas. It emphasizes that the total work done on an object equals the change in its kinetic energy. Finally, it defines power as the rate at which work is done.
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The document discusses various physics concepts related to work, energy and power including:
- The definition of work in physics and the formula to calculate work.
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- Gravitational potential energy and its formula. Gravitational potential energy depends on an object's mass, height above ground, and gravitational acceleration.
- The principles of conservation and conversion of energy. Energy cannot be created or destroyed, it can only change form.
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Work, energy and power ppt
The document outlines key concepts related to work, energy, and power including defining these terms, calculating kinetic and potential energy using formulas, stating the principle of conservation of energy as it relates to the conversion of energy forms, applying these concepts to solve related problems, and calculating mechanical system efficiency. The goal is to understand these fundamental physics concepts and be able to measure, calculate and apply work, energy and power.
Work and Energy.pptx [repaired]
1) The document discusses work, energy, and their relationship through the work-energy theorem. It defines work as the product of force and displacement and distinguishes between different types of work.
2) Kinetic energy and potential energy are also defined. Kinetic energy is defined as 1/2 mv^2 and potential energy as mgh.
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4) Examples are provided to demonstrate calculating work, kinetic energy, and potential energy in different scenarios. The work-energy theorem is also illustrated as showing the relationship between change in kinetic and
WEEK_7_WORKPOWER_AND_ENERGY_PPT.pptx
Work is the amount of energy transferred by a force acting on an object through a distance in the direction of the force. For work to be done, there must be a force acting on an object, the object must be displaced some distance, and the force must be parallel to the displacement. Power is the rate at which work is done, or the amount of work done per unit of time. Energy is the ability to do work and exists in various forms, including kinetic energy from motion and potential energy from position or stress. The document provides examples of calculating work, power, kinetic energy, potential energy, elastic potential energy, momentum, and impulse based on given values.
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This document discusses work, energy, and power. It defines work as force applied over a distance, and explains that work is calculated as force times distance. It also discusses how work can be positive, negative, or zero depending on the direction of force relative to motion. The document then explains how work relates to changes in kinetic energy, and introduces the kinetic energy and gravitational potential energy formulas. It emphasizes that the total work done on an object equals the change in its kinetic energy. Finally, it defines power as the rate at which work is done.
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Energy exists in many forms including mechanical, electrical, heat, light, sound, chemical, and potential energy. Mechanical energy includes potential energy, which is stored energy due to an object's position or shape, and kinetic energy, which is energy from an object's motion. Electrical energy comes from the movement of charged particles like electrons and can be transformed into other forms of energy. Heat, light, sound, and chemical energy can also be transformed from one to another. Potential energy depends on factors like height and tension while kinetic energy depends on motion.
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work and simple machines.pdf
This document discusses work, power, and machines. It defines work as the use of a force to move an object a distance in the same direction. Work is calculated as force times distance (W=FxD). Power is defined as the rate of doing work, or work divided by time. Various simple machines - levers, wheels and axles, inclined planes, wedges, screws, and pulleys - are described and how they can multiply force or distance to make work easier. Compound machines combine two or more simple machines but cannot output more work than is input.
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This document discusses various topics related to energy, including:
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workenergyandpowerppt-131208202046-phpapp02.pptx
- 2. Understand the concept of work, energy and power. 1 2 3 4 5 6 Define work, energy and power. Calculate the form of energy by using formula Kinetic Energy and Potential Energy. State the principal of conservation energy. Describe conversion from one form to another form Apply the concept and formula of work, energy and power in solving the related problems. Calculate the efficiency of mechanical system efficiency
- 3. Q1: How many steps of batu cave stair? Q2: What is the height of the stair? answer: Q3: How to measure our work or energy when climb a stair? Q4: Who has a big power to delivered up the stair?
- 4. Outcomes: Define work, energy and power What does WORK mean to you? Are you doing work when…. Lifting a weights? Walking with a bag grocery in your hand? Completing your homework assignment? Writing essay?
- 6. Outcomes: Define work, energy and power Formula of work is W = F x s F= Force in Newton s = Displacement in meters. Unit of work is Joule. WORK is defined as product of the force and displacement of an object in the direction of force. Displacement
- 7. Outcomes: Define work, energy and power Energy is defined as CAPACITY TO DO WORK. SI Unit : Joule (J) Many form. Common one: Kinetic Potential Electric Chemical Solar Nuclear
- 8. Outcomes: Define work, energy and power Power is defined as ability to do work. SI Unit : Watt (W) Formula: Work time W t P ower P Force displacement time Power Joule second Power Force velocity The Power of body….. Strong and Fast…… (Big Force and small times..)
- 10. Outcomes: Calculate the form of energy by using formula Kinetic Energy and Potential Energy. Definition : Kinetic energy is energy due to the motion. Mass, m of F1 car in kg Kinetic energy Formula: Where: m = mass (kg) v = velocity (ms-1) SI Unit : KE = ½ m v2 Joule (J)
- 11. Outcomes: Calculate the form of energy by using formula Kinetic Energy and Potential Energy. Mass= 624 kg A 624 kg of F1 car is moving at a speed of 150 km/h. Determine the kinetic energy of the car. Given: 41.67m / s 1km 3600s 1000m 1h • Mass = 624 kg • Speed = 150 km h Kinetic energy = ½ m v 2 = ½ x 624 x 41.672 = 541753.34 Joule
- 12. Outcomes: Calculate the form of energy by using formula Kinetic Energy and Potential Energy. Definition : Potential energy is energy possessed by an object due to its position or state. Formula: PE = m g h Joule (J) Where: m= mass (kg) g = gravitational acceleration (ms-1) h = height (m) SI Unit : The cat has a POTENTIAL ENERGY at high position.
- 13. A load with as mass 5 kg was lifted up by a pulley to the height of 0.8 m for pile work. (Use, g = 9.81 ms-2). What is Potential Energy the load. Solution Ep = m g h = 5 kg x 9.81 x 0.8m = 39.24 J
- 14. The principle of conservative of energy states that: 1) Energy cannot be created and destroyed 2) Energy can change from one form to another form. 3) Total of energy is constant. Outcomes: State the principal of conservation energy .
- 15. Outcomes: Describe conversion from one form to another form
- 16. Outcomes: Describe conversion from one form to another form The roller coaster: A: Potential energy B: kinetic energy C: Potential + Kinetic changes alternately… A C B
- 18. ENGINEERING SCIENCE BB101 WORK ENERGY Kinetic Energy Potential Energy Perubahan Tenaga Principle of Conservation of Energy POWER Total energy is constant..
- 19. 0.25m • If little Nellie Newton lifts her 40kg body a distance of 0.25m in 2 seconds, then what is the power delivered by little Nellie's biceps? Solution • The work done is, W = F x s = mg x s = 40kg (9.81) x 0.25 m = 100 J • Hence, the power is P = W t = 100 J 2 s = 50 Watt Outcomes: Apply the concept and formula of work, energy and power in solving the related problems.
- 20. Efficiency of work Efficiency of power Outcomes: Calculate the efficiency of mechanical system efficiency. • Efficiency is the ratio between the useful power delivered by the motor and the power that you supply to the engine. • Efficiency has no unit and is usually expressed in%. Mechanical system efficiency 100 % Work input Work output 100% Power input Power output