Question

There are two identical eggs. One is raw and other is boiled and both are rotated with same angular speed. Which one will come to rest earlier? (A) Can't say anything (B) both will come to rest simultaneously (C) boiled (D) raw

Answer 1

Answer:

(D). Raw

Explanation:

In the question,

If we have two identical eggs of which one is the boiled and another is a raw egg.

When both of them eggs are rotated with the same angular speed.

Then the liquid inside the raw egg will move away from the axis of rotation and therefore, the moment of inertia (I) which is given by,

I = mr²

will increase because the value of r is increasing.

Now,

As the Angular momentum is given by,

L = Iw = constant

where,

I = Moment of inertia

w = Angular velocity

Now as the Inertia (I) is increasing, for the Angular momentum to remain constant the value of Angular velocity (w) should decrease.

Therefore, we can say that the Angular velocity of Raw Egg is decreasing and so will come to rest first.

Therefore, the correct answer is (D).