$A V$-shaped rigid body has two identical uniform arms. What must be the angle between the two arms, so that when the body is hung from one end the other arm is horizontal?
$A V$-shaped rigid body has two identical uniform arms. What must be the angle between the two arms, so that when the body is hung from one end the other arm is horizontal?
- [KVPY 2016]
- A
$\cos ^{-1}(1 / 3)$
- B
$\cos ^{-1}(1 / 2)$
- C
$\cos ^{-1}(1 / 4)$
- D
$\cos ^{-1}(1 / 6)$
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