As shown below, bob A of a pendulum having massless string of length R is released from 60^° to the vertical.…

Question

As shown below, bob **A** of a pendulum having massless string of length $$R$$ is released from $$60^\circ$$ to the vertical. It hits another bob **B** of half the mass that is at rest on a frictionless table in the center. Assuming elastic collision, the magnitude of the velocity of bob **A** after the collision will be (take $$g$$ as acceleration due to gravity):

Accepted Answer

A. $$\frac{1}{3} \sqrt{Rg}$$

Answer

B. $$\sqrt{Rg}$$

Answer

C. $$\frac{2}{3} \sqrt{Rg}$$

Answer

D. $$\frac{4}{3} \sqrt{Rg}$$

Answer & step-by-step solution

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