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  • 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.

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.

Answers (1)

As we know that work done =\overrightarrow{ F}d\overrightarrow{s} = Fds \cos \theta

The value of \theta =90 in this case, since the horizontal distance travelled is on a perpendicular situation to the force of gravity acting downward.

So, work done = \overrightarrow{ F}d\overrightarrow{s} = Fds \cos 90=0

Hence the car does not do any work against gravity

Posted by

infoexpert24

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