A person walks up a stationary escalator in `t_(1)` second. If he remains stationary on the escalator. Then it can take him up in `t_(2)` swcond. If the length of the escalator is `L`, then
a. Determine the speed of man with with respect to the escalator. b. Derermine the speed of the escalator.
How much time would take him to walk up the moving escaltor?.

Explanation

To solve the problem step by step, we will break down the information given and derive the required quantities.

### Given:
- A person walks up a stationary escalator in time \( t_1 \) seconds.
- If the person remains stationary on the escalator, it takes \( t_2 \) seconds to reach the top.
- The length of the escalator is \( L \).

### Part (a): Determine the speed of the man with respect to the escalator.
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