A ring of mass M and radius R slides with speed v₀ and suddenly enters a rough horizontal surface with coefficient of friction µ, as shown.

Select all that apply

• Option A

  As the ring enters on the rough surface, the limiting friction force acts on it.

• Option B

  The direction of friction is opposite to the direction of motion.

• Option C

  The friction force accelerates the ring in the clockwise sense about its centre of mass.

• Option D

  As the ring enters on the rough surface it starts rolling.

Options

• Option A

  The momentum of the ring is conserved

• Option B

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

• Option C

  The angular momentum of the ring conserved about any point on the horizontal surface in line of friction.

• Option D

  The mechanical energy of the ring is conserved

Select all that apply

• Option A

  The ring starts its rolling motion when the centre of mas stationary.

• Option B

  The ring starts rolling motion when the point of contact becomes stationary.

• Option C

  The time after which the ring starts rolling is v₀ 2μg.

• Option D

  The rolling velocity is v₀ 2.