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Raju while drawing water from a well wit...

Raju while drawing water from a well with help of a fixed pulley found that he applied more force than the weight of bucket and water. Then,

A

M.A is less than 1

B

efficiency of the pulley is more than 100%

C

V.R is equal to one

D

Both (a) and (c ).

Text Solution

Verified by Experts

The correct Answer is:
A

Given `E gt L`
`MA = (L)/(E) lt 1`
Here `DE = DL implies V.R. = (DE)/(DL) = 1`
We know, `n = (MA)/(V.R) lt 1`
Therefore, efficiency is less than 100%
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