Rotational Motion-Concepts of Rotational Motion (AIIMS Physics): Questions 1 - 4 of 6

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Question number: 1

» Rotational Motion » Concepts of Rotational Motion

Appeared in Year: 2005

MCQ▾

Question

A horizontal platform is rotating with uniform angular velocity around the vertical axis passing through its center. At some instant of time a viscous fluid of mass “m” is dropped at the center and is allowed to spread out and finally fall on ground. The angular velocity during this period: - [AIIMS]

Choices

Choice (4) Response

a.

Decreases initially and increases again

b.

Decreases continuously

c.

Remains unaltered

d.

Increases continuously

Question number: 2

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

If the equation for the displacement of a particle moving on a circular path is given by θ=2t3+0.5 , where θ is in radians and t in seconds, then the angular velocity of the particle after 2 s from its start is

Choices

Choice (4) Response

a.

24rads

b.

12rads

c.

36rads

d.

8rads

Question number: 3

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

If the equation for the displacement of a particle moving on a circular path is given by θ=3t3+2 , where θ is in radians and t in seconds, then the angular velocity of the particle after 3 s from its start is –

Choices

Choice (4) Response

a.

81rads

b.

27rads

c.

36rads

d.

9rads

Question number: 4

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

A particle moves on a circle of radius 5m such that the distance covered on the circle varies with time according to the law, s=3t2+5 . What is the total acceleration of the particle at t=2sec .

Choices

Choice (4) Response

a.

18ms2

b.

38ms2

c.

29.4ms2

d.

34.8ms2

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