Work, Power, Energy

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What is Work in physics?

Back

Work is defined as the product of force and the distance over which that force is applied in the direction of the force. It is calculated using the formula: Work = Force x Distance.

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What is Power?

Back

Power is the rate at which work is done or energy is transferred over time. It is calculated using the formula: Power = Work / Time.

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What is Energy?

Back

Energy is the capacity to do work. It exists in various forms, including kinetic, potential, thermal, and chemical energy.

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What is Gravitational Potential Energy?

Back

Gravitational Potential Energy is the energy an object possesses due to its position in a gravitational field, calculated as: PE = mgh (mass x gravity x height).

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What is Kinetic Energy?

Back

Kinetic Energy is the energy of an object in motion, calculated using the formula: KE = 1/2 mv² (1/2 x mass x velocity squared).

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What is Elastic Potential Energy?

Back

Elastic Potential Energy is the energy stored in elastic materials as the result of their stretching or compressing, calculated as: PE = 1/2 kx² (1/2 x spring constant x displacement squared).

Front

What is the Work-Energy Principle?

Back

The Work-Energy Principle states that the work done on an object is equal to the change in its kinetic energy.

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How do you calculate work done against gravity?

Back

Work done against gravity can be calculated using the formula: Work = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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What is the unit of Work?

Back

The unit of Work is the Joule (J), which is equivalent to one Newton meter (N·m).

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What is the unit of Power?

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The unit of Power is the Watt (W), which is equivalent to one Joule per second (J/s).