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Question #4 :

What is the amount of energy used to raise a 3000N load 0.4m?

A force of 1000N is used to raise that same load up.

1)State the mechanical advantage of the machine used?

2)Is this machine 100% efficient?

1 answer

.4 * 3000 = f (in Joules)

1) ma = 0utput / input = 3000N / 1000N

2) not enough info

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