Circular Motion
PHXI05:LAWS OF MOTION

363244 If the radius of curvature of the path of two particles of same mass are in the ratio \(3: 4\), then in order to have constant centripetal force, their velocities will be in the ratio of

1 \(\sqrt{3}: 1\)
2 \(1: \sqrt{3}\)
3 \(2: \sqrt{3}\)
4 \(\sqrt{3}: 2\)
PHXI05:LAWS OF MOTION

363245 \(A \operatorname{rod} A B\) of length 2 \(m\) is hinged at point \(A\) and its other end \(B\) is attached to a platform on which a block of mass \(m\) is kept. Rod rotates about point \(A\) maintaining angle \(\theta=30^{\circ}\) with the vertical in such a way that platform remains horizontal and revolves on the horizontal circular path. If the coefficient of static friction between the block and platform is \(\mu=0.1\), then find the maximum angular velocity of rod so that the block does not slip on the platform. \(\left(g=10 {~m} {~s}^{-2}\right)\)
supporting img

1 \(5\,rad\,{s^{ - 1}}\)
2 \(8\,rad\,{s^{ - 1}}\)
3 \(1\,rad\,{s^{ - 1}}\)
4 \(3\,rad\,{s^{ - 1}}\)
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PHXI05:LAWS OF MOTION

363244 If the radius of curvature of the path of two particles of same mass are in the ratio \(3: 4\), then in order to have constant centripetal force, their velocities will be in the ratio of

1 \(\sqrt{3}: 1\)
2 \(1: \sqrt{3}\)
3 \(2: \sqrt{3}\)
4 \(\sqrt{3}: 2\)
PHXI05:LAWS OF MOTION

363245 \(A \operatorname{rod} A B\) of length 2 \(m\) is hinged at point \(A\) and its other end \(B\) is attached to a platform on which a block of mass \(m\) is kept. Rod rotates about point \(A\) maintaining angle \(\theta=30^{\circ}\) with the vertical in such a way that platform remains horizontal and revolves on the horizontal circular path. If the coefficient of static friction between the block and platform is \(\mu=0.1\), then find the maximum angular velocity of rod so that the block does not slip on the platform. \(\left(g=10 {~m} {~s}^{-2}\right)\)
supporting img

1 \(5\,rad\,{s^{ - 1}}\)
2 \(8\,rad\,{s^{ - 1}}\)
3 \(1\,rad\,{s^{ - 1}}\)
4 \(3\,rad\,{s^{ - 1}}\)