A) \[{{0}^{o}}\]
B) \[{{30}^{o}}\]
C) \[{{45}^{o}}\]
D) \[{{60}^{o}}\]
Correct Answer: C
Solution :
From force diagram shown in figure, \[T=mg\] ...(i) and\[2T\cos \theta =\sqrt{2}mg\] ...(ii) Combining Eqs.(i) and (ii), we have \[2m\,\cos \theta =\sqrt{2}\,mg\] or \[\cos \theta =\frac{1}{\sqrt{2}}\] or \[\theta ={{45}^{o}}\]You need to login to perform this action.
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