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A uniform heavy disc is rotating at constant angular velocity  about a vertical axis through its centre and perpendicular to the plane of the disc. Let  be its angular momentum. A lump of plasticine is dropped vertically on the disc and sticks to it. Which will be constant

a)

b)

 and  both

c)

 only

d)

Neither  nor



Question ID - 53710 | SaraNextGen Top Answer

A uniform heavy disc is rotating at constant angular velocity  about a vertical axis through its centre and perpendicular to the plane of the disc. Let  be its angular momentum. A lump of plasticine is dropped vertically on the disc and sticks to it. Which will be constant

a)

b)

 and  both

c)

 only

d)

Neither  nor

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

Angular momentum  constant

 increases and  decreases

127 votes


127