Rotational MotionHard
Question
A body is rolling without slipping on a horizontal surface and its rotational kinetic energy is equal to the translational kinetic energy. The body is : -
Options
A.disc
B.sphere
C.cylinder
D.ring
Solution
As given (KE)R = (KE)translational = 
Iω2 = 
Mv2
=
MK2ω2 = 
MR2ω2; 
= 1 ⇒ Hence ring
Iω2 = Mv2 =
MK2ω2 = MR2ω2; = 1 ⇒ Hence ring Create a free account to view solution
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