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Work done and power

Work done and power

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When a force moves an object through a distance, work is said to be done. Work done is the energy transferred and it can be calculated using the formula: Work Done = Force Γ— Distance moved in the direction of the force. It is measured in Joules, J.

Work done

Power is defined as the rate of energy transfer and is measured in Watts, W. It can be calculated using: Power = energy transferred/time.

Power

A force-displacement graph is drawn by plotting the force acting on an object on the y-axis and the distance travelled on the x-axis. The area under the plotted graph is equal to the work done on or by the object.

Force-displacement graphs

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