First slide

Mechanical equilibrium force cases

Question

In the given arrangement, for the system to remain under equilibrium, the ' θ ' should be

Moderate

A

0⁰
B

30⁰
C

45⁰
D

60⁰

Solution

$2T\cos \theta = \sqrt 2 Mg$
$2\,\cancel{{Mg}}\cos \theta = \sqrt 2 \,\,\,\cancel{{Mg}}$
$cos\theta=\frac {\sqrt 2}{2} \therefore \theta=45^0$

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