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Intro to Torque

A squirrel of...

Question

A squirrel of mass m climbs slowly on a thin straight vertical rod of length 8 m. Mass of rod is negligible. Due to the weight of squirrel, the rod rotates and a restoring torque $c θ$ is developed. If c = 2 mgL, then maximum length that squirrel can climb on rod without touching ground is (Write upto two digits after the decimal point.)

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Solution

$m g l = c θ$

$m g l = 2 m g L \frac{π}{2}$

$l = π L$
So, $l$ is more than L (L = 8).
Therfore, it can travel the entire length of the rod which is 8 m.

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