Question

• An insect trapped in a circular groove of radius 12cm moves along the groove steadily and complete


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Answer 1

Her, T=100/7s,r=12cm

(a) Angular speed , ω=2πT=(2×22/7(100/7) ltbrltgt =0.44rad/s

Linear speed, v=rω12×0.44

=5.3cms−1

(b) The given motion is a uniform circular motion. Here the direction of velocity id along the tangent to the circle at every point. The acceleration in this motion is centripetal acceleration. It is alwys directed towards the centre of the circle. Since this direction changes therfore, the acceleration here is not a constant vector. The magnitude of acceleration is _(c) =omega ^(2) =(0.44 )^(2) xx 12 2.3 cm s^(2)`.

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