Work And Energy
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The document discusses different types of energy including work, kinetic energy, and potential energy. It defines work as force exerted over a displacement and provides the formula W=F*d. Kinetic energy is the energy of motion and is calculated as KE=1/2mv^2. Potential energy is stored energy, like gravitational potential energy which is calculated as PE=mgh.
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The document summarizes work, energy, and Newton's second law. It defines work as a force applied over a distance, and discusses how work can be positive, negative, or zero depending on the direction of force and distance. It also introduces the work-energy theorem, which states that the work done on an object equals its change in kinetic energy. Potential energy stored can also be converted to kinetic energy. The document distinguishes between different types of potential and kinetic energy.
Sc(phys) chapter 7 work, energy and power
1) Work is done when a force causes an object to move in the direction of the force. Different types of energy include kinetic, potential, chemical and thermal.
2) The principle of conservation of energy states that energy cannot be created or destroyed, only converted from one form to another.
3) Kinetic energy is defined as E_k=1/2mv^2 and gravitational potential energy as E_p=mgh. These relationships can be used to solve problems involving work, energy and power.
Work
1) Work is defined as a force acting upon an object to cause displacement and is expressed as the product of force and displacement in the direction of force.
2) The work done on a body depends on the magnitude of the force and the displacement through which the body moves in the direction of force.
3) As the angle between the direction of force and motion of the body increases, less work is done along the direction of motion since less of the force is acting in that direction.
11workandenergy-150809064825-lva1-app6891.pdf
This document provides definitions and explanations of key concepts related to work, energy, and power:
1) Work is done when a force causes an object to be displaced in the direction of the force. Work is measured in joules, which is the work done by a force of 1 newton over a displacement of 1 meter.
2) Energy is the ability of an object to do work and is also measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3) Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is the stored energy an object possesses due to its position
work and energy
This document provides definitions and explanations of key concepts related to work, energy, and power:
1) Work is done when a force causes an object to be displaced in the direction of the force. Work is measured in joules, which is the work done by a force of 1 newton over a displacement of 1 meter.
2) Energy is the ability of an object to do work and is also measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3) Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is the stored energy an object possesses due to its position
Work, energy and power
1) In an elastic collision between two bodies in one dimension, both linear momentum and kinetic energy are conserved.
2) By applying the laws of conservation of momentum and kinetic energy, equations relating the velocities of the bodies before and after collision can be derived.
3) These equations allow calculating the unknown velocities if the masses of the bodies and their velocities before collision are known.
9th Work & Energy.ppt
The document defines key physics concepts related to work, energy, and power:
1) Work is the product of the force applied and the distance an object is displaced in the direction of the force. Work is measured in joules and can be positive, negative, or zero depending on the angle between the force and displacement.
2) Kinetic energy is the energy of an object due to its motion, calculated as one-half mass times velocity squared. Potential energy is stored energy due to an object's position in a force field, calculated as mass times gravitational field strength times height.
3) Power is defined as the rate at which work is done and is measured in watts, with one watt
Work, energy, and power
This document discusses concepts of work, energy, and power. It defines work as a force causing displacement and introduces equations to calculate work. It distinguishes between kinetic energy as the energy of motion and potential energy as stored energy due to an object's position or elastic source. Formulas are provided to calculate potential energy, kinetic energy, spring constant, and power.
Work and Energy
1. Work is done when a force causes an object to be displaced in the direction of the force. Work is calculated as force multiplied by displacement.
2. Energy is the ability of an object to do work and is measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3. Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is stored energy due to an object's position or shape, such as from raising an object vertically or compressing a spring.
Work,power and energy
1) Work is done when a force causes an object to move through a distance. It is calculated as work = force x distance.
2) There are different types of energy including kinetic energy from motion, potential energy that is stored, and many others from different sources.
3) The law of conservation of energy states that the total energy in an isolated system remains constant, although it can change forms from one to another, such as potential to kinetic energy.
workenergypowerbyakshat-151106163627-lva1-app6892.pdf
1) The document discusses different forms of energy including kinetic energy, potential energy, and gravitational potential energy.
2) Kinetic energy is the energy an object possesses due to its motion, and depends on the object's mass and velocity.
3) Potential energy is energy stored within a system due to an object's position or shape, such as energy stored when stretching a spring.
Potential and kinetic energy.pptx
This document discusses potential and kinetic energy. It defines energy as the ability to do work, with units of joules. Potential energy is the energy an object gains due to its position or height, and is calculated as PE=mgh. Kinetic energy is the energy of motion an object possesses due to its mass and speed, calculated as KE=1/2mv^2. The greater the mass or speed of an object, the greater its kinetic or potential energy.
W2 Work, Energy and Power PPT .pptx
This document defines work, energy, and power. It states that work is done when a force causes an object to move, and provides the formula for calculating work (W=F×d). Energy is defined as the ability to do work or cause change, and can exist in various forms including potential and kinetic energy. Potential energy is stored energy due to an object's position or property, while kinetic energy is energy due to an object's motion. Power is the rate at which work is done and is calculated as work divided by time (P=W/t). Examples are provided to demonstrate calculating work, energy, and power.
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workenergypowerbyakshat-151106163627-lva1-app6892.pdf
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