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Work Done by a Force

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A series of free GCSE/IGCSE Physics Notes and Lessons.

Work Done by a Force

The following diagram gives the formula for work done by a force. Scroll down the page for more examples and solutions on how to use the formula.

Work done by a Force

In this lesson, we will
• Describe what is meant by work done.
• Calculate work done by a force acting on a force.

Work is done whenever energy is transferred from one store to another.
Mechanical work involves using a force to move an object.
Electrical work involves a current transferring energy.
Work done (J) = Force (N) x Distance (m)

Example:
During braking, a force of 2000N is applied to the brakes of a car. The car takes 20m to come to a stop. Calculate the work done.



Examples:
1. A person with a mass of 75kg travels a distance of 10m in a lift. Calculate the work done by the lift moving the person.
2. A person with a mass of 50kg walks up a flight of stairs. The distance from the bottom of the stairs to the top is 5m. Calculate the work done by the person climbing the stairs.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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