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At what minim...

Question

At what minimum acceleration should a monkey should slide a rope whose breaking strength is two-three of its weight?

A

g

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B

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C

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D

2g

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Solution

The correct option is B
When a monkey is sliding a rope, the net force acting on it is given by
ma = mg - T, where T is the breaking strength of the rope
$\Rightarrow$ ma = mg - $\frac{2}{3}$ mg
$\Rightarrow$ a = $\frac{g}{3}$

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