A uniform bar of length L = 12 cm and mass M = 20m lies on a smoo... | Physics MCQ [Updated November 2026] | GkGet

The moment of inertia of a rigid body depends on:

Consider a flywheel of mass 10 kg, uniform thickness 15 mm, and radius 100 mm. If it rotates at 300 RPM, then the kinetic energy of the flywheel (in Joules) is:

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3

Two small balls with masses m and 2m are attached to both ends of a rigid rod of length d and negligible mass. If the angular momentum of this system is L about an axis passing through its centre of mass and perpendicular to the rod, then the angular velocity of the system is:

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4

The moment of inertia of a square loop made of four uniform solid cylinders, each having radius R and length L (R < L), about an axis passing through the midpoints of opposite sides, is (Take the total mass of the loop as M):

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5

The angular velocity of a body changes from 6 rad s-1 to 21 rad s-1 in a time of 1.5 s. If the moment of inertia of the body is 100 g m2, then the rate of change of angular momentum of the body is:

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6

A solid sphere of mass 5 kg and radius 10 cm is kept in contact with another solid sphere of mass 10 kg and radius 20 cm. The moment of inertia of this pair of spheres about the common tangent passing through their point of contact is ________ kg·m2.

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7

In the Pth second, a particle starting from rest undergoes an angular displacement of 'β' rad. If the particle accelerates uniformly, its angular acceleration is:

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8

द्रव्यमान M और त्रिज्या R की एक पतली समान वृत्ताकार डिस्क अपने केंद्र से गुजरने वाले और उसके तल के लंबवत एक ऊर्ध्वाधर अक्ष के परितः कोणीय वेग ω से एक क्षैतिज तल में घूम रही है। उसी त्रिज्या की लेकिन द्रव्यमान M2 की एक अन्य डिस्क को धीरे से पहली डिस्क पर समाक्षीय रूप से रख दिया जाता है। संयुक्त प्रणाली का नया कोणीय वेग क्या होगा?

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