One end of a massless rope, which passes over a massless and frictionless pulley $P$ is tied to a hook $C$ while the other end is free. Maximum tension that the rope can bear is $360\ N$. with what value of minimum safe acceleration ( in $ms^{- 2}$) can a monkey of $60\ kg$ move down on the rope [image:5_image6.png]

Question

Dr. Abubacker · Accepted Answer

(c) If monkey move downward with acceleration $a$ then its apparent weight decreases. In that condition
Tension in string $= m(g - a)$
This should not be exceed over breaking strength of the rope $i.e$. $360 \geq m(g - a) \Rightarrow 360 \geq 60(10 - a) \Rightarrow a \geq 4\ m/s^{2}$

Q. One end of a massless rope, which passes over a massless and frictionless pulley $P$ is tied to a hook $C$ while the other end is free. Maximum tension that the rope can bear is $360\ N$. with what value of minimum safe acceleration ( in $ms^{- 2}$) can a monkey of $60\ kg$ move down on the rope

Explanation

Reviewed by Dr. Abubacker

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