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yaroslaw [1]
3 years ago
5

A lever and fulcrum are used to lift a fallen tree, which has a weight of 480N. if the lever has a mechanical advantage of 5.5,

what is the input force that will begin lifting the tree of the ground
Physics
1 answer:
Alisiya [41]3 years ago
8 0

Answer:

<h2>The input force is 87.27N</h2>

Explanation:

Mechanical advantage (M.A)of a machine is the ratio of load to effort

<h2>Given</h2>

M.A= 5.5

load= 480N

effort= ?

Applying the formula and substituting to find the effort we have

M.A= \frac{load}{effort}

5.5= \frac{480}{effort}\\\effort= \frac{480}{5.5} \\\effort= 87.27N

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<h3>Why are the cabins of commercial airplanes pressurized?</h3>

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