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The torque required to produce a unit tw...

The torque required to produce a unit twist in a solide bar of length `L` and radius `r` is

A

directly proportional to `r^(2)`

B

directly proportional to `r^(4)`

C

inversely proportional to `l`

D

inversely proportional to `r^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B, C
Torsion constant of a wire is `c = (pi eta r^(4))/(2l)`, where `eta =` modulus of rigidly as `tau = c theta`.
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