Question

p45. an 820 n marine in basic training climbs a 12.0 m vertical rope at a constant speed in 8.00 s. what is his power output?

Answer 1

The power output of a marine in basic training that climbs a rope at constant speed is 1230 W

How is the power output calculated?

Given-

Force(Fg) = 820N

Height(h) = 12 m

Time consumed(t) = 8 sec

Hence,

Work done =force × displacement

W = Fg × h

W = 820×12

W =9840 J

We know,

Power = W/t

           = 9820/ 8

Therefore, power output is 1230W

What is Force?

A force is an external factor that can change the body's state of rest or motion. It has size and direction. The direction in which the force is applied is called the force direction, and the point at which the force is applied is called the force application point. A spring balance can be used to measure force. His SI unit of force is the Newton (N). Objects can accelerate, decelerate, or change direction in response to forces.

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