Rotational Motion (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 3 - 5 of 14

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Question number: 3

» Rotational Motion » Concepts of Rotational Motion

Appeared in Year: 2011

MCQ▾

Question

Figure below shows a small mass connected to a string, which is attached to a vertical post. If the ball is released when the string is horizontal as shown, the magnitude of the total acceleration (including radial and tangential) of the mass as a function of the angle θ is –

Small mass connected to string, which attached to vertical post

Small Mass Connected to String, Which Attached to Vertical Post

Figure shows a small mass connected to a string, which is attached to a vertical post. The ball is released when the string is horizontal and we have to find the magnitude of the total acceleration (including radial and tangential) of the mass as a function of the angle θ.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 4

» Rotational Motion » Frequency and Period

Appeared in Year: 2014

MCQ▾

Question

A body moves in a circular orbit of radius R under the action of a central force. Potential due to the central force is given by Equation (k is positive constant). Period of revolution of body is equal to:

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 5

» Rotational Motion » Torque

Appeared in Year: 2014

MCQ▾

Question

A simple pendulum is attached to the block which slides without friction down an inclined plane (ABC) having an angle of inclination α as shown.

Free body diagram of pendulum

Free Body Diagram of Pendulum

In figure forces acting on a simple pendulum is attached to the block which slides without friction down an inclined plane is shown

While the block is sliding down the pendulum oscillates in such a way that its mean position the direction of the string is –

Choices

Choice (4) Response

a.

vertically downwards

b.

parallel to the inclined plane AC.

c.

at angle α to the perpendicular to the inclined plane AC.

d.

perpendicular to the inclined plane AC.

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