Mechanical Engineering > GATE 2022 SET-2 > Rotational Dynamics
A massive uniform rigid circular disc is mounted on a frictionless bearing at the end E of a massive uniform rigid shaft AE which is suspended horizontally in a uniform gravitational field by two identical light inextensible strings AB and CD as shown, where G is the center of mass of the shaft-disc assembly and 𝑔 is the acceleration due to gravity. The disc is then given a rapid spin πœ” about its axis in the positive x axis direction as shown, while the shaft remains at rest. The direction of rotation is defined by using the right-hand thumb rule. If the string A
A
rotate slowly (compared to Ο‰) about the negative z-axis direction
B
rotate slowly (compared to Ο‰) about the positive z-axis direction
C
rotate slowly (compared to Ο‰) about the positive y-axis direction
D
rotate slowly (compared to Ο‰) about the negative y-axis direction

Correct : b

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Related Topics

rigid body rotation uniform rigid shaft disc system GATE mechanical engineering 2022 rotating strings mechanics right hand thumb rule spinning mass assembly rotational dynamics string tension effect mechanical engineering gate questions

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