Question

Mohan was always jealous of Ravi as Ravi was better in studies for which everybody praised him. One

day, Mohan challenged Ravi to defeat him in the race-uphill. They were both good runners but running uphill

was difficult. Mohan ran very fast and was ahead of Ravi. After sometime, Mohan became breathless and

started coughing.

If the mass of bag 0.3 kg and is taken up on an inclined plane of length 10m and height 5 m, then allowed to

slide down to bottom. The coefficient of friction between the body and plane is 0.15,what is the:

i. Work done by gravitational force over the round trip.

ii. Work done by applied force on upward journey.

iii. What do you mean by positive work and negative work?

iv. State work-energy theorem.

v. Define angle of repose.​

Answer 1

Explanation:

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