First slide

Different types of Forces

Question

A person wishes to slide down a rope whose breaking load is $\frac{3}{5}$ of the weight of the person. Minimum acceleration by which the person should slide down without breaking the rope is:

Easy

A

0.8 g
B

1.2 g
C

0.6 g
D

0.4 g

Solution

$\begin{array}{l} mg - T_{max} = {ma}_{min} \\ \Rightarrow a_{min} = (mg - \frac{3}{5} mg) / m = 0 .4 g \end{array}$

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