Calculate the work done by a car against grav | vedclass

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(A) The force of gravity acts on the car vertically downward,while the car is moving along a horizontal road. Therefore,the angle between the force of

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$0$

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(A) The force of gravity acts on the car vertically downward,while the car is moving along a horizontal road. Therefore,the angle between the force of gravity and the displacement is $	heta = 90^{\circ}$.The formula for work done is $W = F d \cos 	heta$.Substituting the values,we get $W = F d \cos 90^{\circ}$.Since $\cos 90^{\circ} = 0$,the work done is $W = 0\,J$.Thus,the work done by the car against gravity is $0\,J$ because the displacement is perpendicular to the gravitational force.

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 $2\,m$. (in $,J$)

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