A body of mass 25 kg is at rest on a horizontal surface. Minimum horizontal force required to just start motion is `73.5N` and a force of 49N is needed to keep the body moving with a constant velocity. What is the coefficient of (i) static friction and (ii) kinetic friction ?

Explanation

To solve the problem, we need to find the coefficients of static and kinetic friction for a body of mass 25 kg on a horizontal surface. We are given the following information:

- Mass of the body (m) = 25 kg
- Minimum horizontal force required to just start motion (F_s) = 73.5 N
- Force needed to keep the body moving with constant velocity (F_k) = 49 N
- Acceleration due to gravity (g) = 9.8 m/s²

### Step 1: Calculate the Normal Force (R)
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