Physics System of Particles Rotational Motion JEE Main 2025 ( Rotational Motion ) MCQ (Single Correct)

A solid sphere with uniform density and radius is rotating initially with constant angular velocity about its diameter. After some time during the rotation its starts loosing mass at a uniform rate, with no change in its shape. The angular velocity of the sphere when its radius become is . The value of is______.

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CHECK THE SOLUTION.

(32)

When sphere is of radius , its mass is , when radius is reduced to , mass will reduced to

Now by conservation of angular momentum

value of x is 32
Answer is 32

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