# Classical Mechanics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 5 - 7 of 69

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## Question number: 5

» Classical Mechanics » Rigid Body Dynamics - Moment of Inertia Tensor

Appeared in Year: 2013

MCQ▾

### Question

A ring of mass m and radius R rolls down (without slipping) an inclined plane starting from rest. If the centre of the ring is initially at a height h, the angular velocity when the ring reaches the base is – (December)

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Choice (4) Response

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## Question number: 6

» Classical Mechanics » Periodic Motion » Normal Modes

Appeared in Year: 2013

MCQ▾

### Question

A particle of charge e and mass m is located at the midpoint of the line joining two fixed collinear dipoles with unit charges as shown in figure. (The particle is constrained to move only along the line joining the dipoles. ) Assuming that the length of the dipoles is much shorter than their separation, the natural frequency of oscillation of the particle is – (June)

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Choice (4) Response

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d.

## Question number: 7

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

Appeared in Year: 2013

MCQ▾

### Question

The area of a disc in its rest frame S is equal to 1 (in some units). The disc will appear distorted to an observer O moving with a speed u with respect to S along the plane of the disc. The area of the disc measured in the rest frame of the observer O is (c is the speed of light in vacuum) (June)

### Choices

Choice (4) Response

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d.

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