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The relation between the torque τ→ and the angular momentum L→ of a body of moment of inertia I rotating with angular velocity ω is

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Important Questions on Rotational Motion

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Classical Thinking>Q 54
The Unit of angular momentum is
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Classical Thinking>Q 55
A constant torque is applied on a circular wheel, which changes its angular momentum from 0 to  4 L in 4 s. The torque is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Classical Thinking>Q 56
A uniform stick of length l and mass m lies on a smooth table. It rotates with angular velocity ω about an axis perpendicular to the table and through one end of the stick. The angular momentum of the stick about the end is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Classical Thinking>Q 57
The moment of inertia of a uniform circular disc of mass M and radius R about any of its diameters is 14MR2. What is the moment of inertia of the disc about an axis passing through its centre and normal to the disc?
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Classical Thinking>Q 58
The moment of inertia of a body about a given axis is 3.6 kg m2. Initially, the body is at rest. In order to produce a rotational K.E. of 800 J, an acceleration of 15 rad s-2 must be applied about that axis for
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Classical Thinking>Q 59
A ring, a solid cylinder and a solid sphere roll on the same inclined plane without slipping, starting from rest. The radii of the bodies are identical. Which of the bodies reach the ground with maximum velocity?
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Classical Thinking>Q 60

Assertion: A disc rolls without slipping on a horizontal surface and the linear speed of its centre of mass is v. The rotational speed of the particles on its rim at the top of the disc will be 2v

Reason: The disc rolls as if it is rotating about the point of contact with the horizontal surface.

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Critical Thinking>Q 1
The diameter of a flywheel is increased by 1% keeping the mass same. Increase in its moment of inertia about the central axis is