Two identical eggs, one raw and other boiled, area rotated with the same angular speed. Which one will come to rest earlier?

Options

A. can.t say anything
B. both eggs will come to rest simultaneously
C. boiled egg
D. raw egg

Answer

C

Explanation

When both of them are allowed to spin, the egg which spins slower must be the raw egg because the liquid inside it tries to get away from the axis of rotation increasing the value of moment of inertia `I=SigmaM_(i)r_(i)^(2)`. It is not occur in the case of boiled egg.
Now moment of inertia of raw egg `I_(1)gt` moment of inertia of boiled egg `(I_(2))`. both having same torque durin rotational motion so `I_(1)alpha_(1)=I_(2)alpha_(2)`, where `alpha_(1)andalpha_(2)` are anti angular accelerations of raw and boiled egg respectively.
Here`I_(1)gtI_(2)` hence `alpha_(1)ltalpha_(2)` so raw egg has less anti angular acceleration and hence it takes more time for rest, while `alpha_(2)` is more in boiled egg, so angular velocity slowly reducing to zero and it come to rest.