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Calculate the work done by a car against...

Calculate the work done by a car against gravity in moving along a straight horizontal road. The mass of the car is 400 kg and the distance moved is 2m.

Text Solution

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Force of gravity acts on the car vertically downward while car is moving along horizontal road,i.e. angle between them is `90^(@)`
Work done by the car against gravity
W=Fs cos`90^(@)=0 (therefore cos 90^(@)=0)`
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