First slide

Different types of Forces

Question

A block of mass 10 kg lying on a smooth horizontal surface is being pulled by means of a rope of mass 2 kg. If a force of 36N is applied at the end of the rope, the tension at the mid point of the rope is,

Moderate

A

33 N
B

30 N
C

24 N
D

12 N

Solution

$T = \frac{{{m_1}F}}{{{m_1} + {m_2}}} = \frac{{11 \times 3{{\cancel{6}}^3}}}{{1\cancel{2}}} = 33N\;(or)$

a
$= \frac{F}{m} \Rightarrow \frac{{36}}{{12}} = 3\,\,m/{s^2}$

F – T = ma
36 – T = 1(3)
T = 33N

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