A particle is projected at the bottom of a smooth spherical shell of radius 2 m with just sufficient speed to complete a vertical circle. Then:

Select all that apply

• Option A

  Its acceleration when velocity is vertically upward has magnitude g√10

• Option B

  Its acceleration when velocity is vertically downward has magnitude g√10

• Option C

  Its acceleration at the top is g

• Option D

  Its acceleration at the bottom is 5g