Astudent weighing 200n climbs a flight of stairs 7.0m high in 8s. what power is required to perform this task?

Power required, P = 175 watts

Explanation:

It is given that,

Weight of a student, F = mg = 200 N

The student climbs a flight of stairs of height, h = 7 m

Time taken, t = 8 s

We have to find the power required to perform this task. Work done per unit time is called the power required. Mathematically, it is given by :

W = work done

t = time taken

P = 175 watts

Hence, the power required to complete this task is 175 watts.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle