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If you lift a 200 newton box 1 meter with a rope and is the system and you apply 20 newtons to lift this box, what to mechanical advantage of the system? How far do you have pull the rope when you are applying the input force? If you do this work in 5 seconds, what is the power?

Respuesta :

The mechanical advantage of the system is 0.1.

When you are applying the input force, rope is pulled by 10m.

The power is 40 Watt.

What is mechanical advantage?

Mechanical advantage is the ratio of power output to the power input.

M.A= 20 N / 200 N

M.A = 0.1

Thus, the mechanical advantage is 0.1.

The length of rope pulled = 1m / M.A

= 1/0.1

= 10m

Thus, when you are applying the input force, rope is pulled by 10m.

Work done by the force = force * distance traveled

W = 200N * 1m = 200 J

Power = Work done /time

P = 200 J/5s

P = 40 Watt

Thus, the power is 40 Watt.

Learn more about Mechanical advantage.

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