Physics Homework Question?

Question

In climbing up a rope, a 76-kg athlete climbs a vertical distance of 5.5 m in 9.0 s.

What minimum power output was used to accomplish this feat?

 

Express your answer to two significant figures and include the appropriate units.

Answer 1

Step 1:

The weight of the athletic is .

The athletic climbs a vertical distance is .

The time taken for climbing a vertical distance is .

The work done of climbing rope is .

Substitute , and in .

.

Step 2:

Find the minimum output power output used to accomplish the feat.

.

Substitute and in .

The minimum output power is .

Solution:

The minimum output power is .