Question

The steel wire can withstand a load up to 2940 N. A load of 150 kg is suspended from a rigid support. The maximum angle through which the wire can be displaced from the mean position so that the wire does not break

• A. ${30}^{\circ }$
• B. ${60}^{\circ }$
• C. ${80}^{\circ }$
• D. ${85}^{\circ }$

Answer 1

The correct option is B ${60}^{\circ }$

Consider the above figure,

At $B$ in equilibrium,

$Tcos\theta =mg$

$⟹cos\theta =\frac{150\times 9.8}{2940}$

$⟹cos\theta =0.5$

$⟹\theta ={60}^0$