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

Explanation

Correct : b

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