A force of 15 N is required to pull up a body of mass 2 kg through a distance 5 m along an inclined plane making an angle of `30^(@)` with horizontal as shown in fig calculate :
(i)the work done by the force in pulling the body.
(ii)The force due to gravity on the body,
(iii)the work done against by the force due to gravity Take :g=9.8 m `s^(-2)`.
(iv)Account for the difference in answers of part (i) and part (iii).

Explanation

To solve the given problem step by step, we will address each part of the question systematically.

### Given Data:
- Force required to pull the body, \( F = 15 \, \text{N} \)
- Mass of the body, \( m = 2 \, \text{kg} \)
- Distance along the inclined plane, \( d = 5 \, \text{m} \)
- Angle of inclination, \( \theta = 30^\circ \)
- Acceleration due to gravity, \( g = 9.8 \, \text{m/s}^2 \)
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