Question

A boy of mass 40 kg is hanging from the horizontal branch of a tree. The tension in his arms is
minimum when the angle between the arms is:

Answer 1

Heya!!

Here's your answer!!

Let 2θ be the angle between the arm

2T cos θ = mg

T = mg/2cosθ

Tension when cos θ is mass. this achieved when θ = 0

T = mg/2 = 40×10/2

= 200 N

The both arm should be parallel ..ll.e. either 0 or 360.

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