• # question_answer 32) An insect trapped in a circular groove of radius$12\text{ }cm$. Moves along the groove steadily and completes 7 revolutions in 100 sec. What is the linear speed of the motion A)  $2.3\text{ }cm/sec,$           B)  $5.3\text{ }cm/sec.$C)  $0.44\text{ }cm/sec,$         D)  None of these

This of example of uniform circular motion. $\omega =\frac{2\pi }{T}=2\pi n=2\pi \times \frac{7}{100}=0.44rad/\sec .;$ $V=R\omega =0.44\times 12=5.3cm/\sec$.