IT takes 20 s for a person A of mass 50 kg to climb up the stairs. While another person B of same mass does the same in 15 s compare (i) work done (ii) power developed by the person A and B.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Determine the Work Done by Both Persons
The work done (W) in climbing a height (h) is given by the formula:
\[ W = mgh \]
where:
- \( m \) = mass of the person
- \( g \) = acceleration due to gravity (approximately \( 9.81 \, \text{m/s}^2 \))
...