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13.Oscillations
easy
A simple pendulum consisting of a ball of mass $m$ tied to a thread of length $l$ is made to swing on a circular arc of angle $\theta $ in a vertical plane. At the end of this arc, another ball of mass $m$ is placed at rest. The momentum transferred to this ball at rest by the swinging ball is
A
Zero
B
$m\theta \sqrt {\frac{g}{l}} $
C
$\frac{{m\theta }}{l}\sqrt {\frac{l}{g}} $
D
$\frac{m}{l}2\pi \sqrt {\frac{l}{g}} $
Solution
a) No momentum will be transferred because, at extreme position the velocity of bob is zero.
Standard 11
Physics
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