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A ring of mass M and radius R sliding wi...

A ring of mass `M` and radius `R` sliding with a velocity `v_(0)` suddenly enters inthrough surface where the coefficient of friction is `mu`, as shown in figure.
.
Choose the correct statement (s).

A

The momentum of the ring is conserved

B

The angular momentum of the ring is conserved about its centre of mass

C

The angular momentum of the ring conserved about any point on the horizontal surface

D

The mechanical energy of the ring is conserved.

Text Solution

Verified by Experts

The correct Answer is:
C
(A) Due friction `v_(0)` decreases so momentum will decrease.
(B) Due to torque provided by friction `omega` increases so `J = I omega` will increase
( C) Angular moment about any point on horizontal surface `J = I omega + mv_(0) R` will remain conserved
(D) Mechanical energy of ring will decrease.
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