Diana raises a 1000 N piano a distance of 5.00 m using a set of pulleys. She pulls in 20.0 m of rope. If the actual force is 300 N, what is the actual mechanical advantage?

a) The effort applied () if it was an ideal machine is:

b) If the actual effort = 300 N

The force to overcome friction = actual effort - = 300 - 250 = 50 N

c) Work output =

d) ideal mechanical advantage (IMA) =

e) Input force = 300 N, Therefore:

actual mechanical advantage = / input force = 1000 / 300 = 3.33

Explanation:

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