MHT CET Physics question
A hoop of radius and mass rotating with an angular velocity is placed on a rough horizontal surface. The initial velocity of the centre of the hoop is zero. What will be the velocity of the centre of the hoop when it ceases to slip?
Answer: (C)
Solution
Friction passes through the contact point, so angular momentum about it is conserved: mr² ω_0 = mvr +
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