Question
Asked Jan 23, 2020
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Choose the BEST answer to the following:

Lift a 100-N crate with an ideal pulley system by pulling a rope downward with 25 N of force. For every 1-m length of rope pulled down, the crate rises

(a) 25 cm.

(b) 25 m.

(c) 50 cm.

(d) None of these.

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Expert Answer

Step 1

Step 1

Work done by a body is the product of force on it and the displacement produced by it.

Let F be to force acting through displacement d. Then work done is given as

Physics homework question answer, step 1, image 1
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Step 2

Step 2

Weight of the crate W1 and the downwards force W2 is

Physics homework question answer, step 2, image 1
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Step 3

Step 3

Now it is kn...

Physics homework question answer, step 3, image 1
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Science

Physics

Work,Power and Energy

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