A body of mass 0.3kg is taken up an inclined plane of length 10m and height 5m, and then allowed to slide down to the bottom again. The coefficient of friction between the body and the plane is `0.15`. What is the
(a) work done by the gravitational force over the round trip.
(b) work done by the applied force over the upward journey
(c ) work done by frictional force over the round trip.
(d) kinetic energy of the body at the end of the trip.
How is the answer (d) related to the first three answers ?
`m=0.3kg`, `OA=10m`, `BA=5m`

Explanation

To solve the problem, we will break it down into parts as per the questions asked.

### Given Data:
- Mass of the body, \( m = 0.3 \, \text{kg} \)
- Length of the inclined plane, \( OA = 10 \, \text{m} \)
- Height of the inclined plane, \( BA = 5 \, \text{m} \)
- Coefficient of friction, \( \mu = 0.15 \)

...