Q. A boy is hanging from a horizontal branch of a tree. The tension in the arms will be maximum when the angle between the arms is
A) $0{^\circ}$
B) 60${^\circ}$
C) 90${^\circ}$
D) 120${^\circ}$
Explanation
(d) As maximum value of $T = mg$ from $2T$ cos$\theta = mg$.
$2$ cos$\theta = 1,cos\theta = \frac{1}{2},\theta = 60{^\circ}$
Angle between two arms =2$\theta = 120{^\circ}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.