Rotational Motion (NEET Physics): Questions 97 - 100 of 123

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2099 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 97

» Rotational Motion » Torque

MCQ▾

Question

The torque required to stop a wheel of moment of inertia 2×103kgm2 from a speed of 40 rad s -1 in 10 s is,

Choices

Choice (4) Response
a.

8 ⨯ 10 -3 Nm

b.

8 Nm

c.

0.8 Nm

d.

0.08 Nm

Question number: 98

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

A solid sphere is rolling on a frictionless surface shown in figure with a transnational velocity v m/s. If sphere climbs up to height h then value of v should be

Rolling sphere which is supposed to climb on height h

Rolling Sphere Which Is Supposed to Climb on Height H

Solid sphere is rolling on a frictionless surface shown in figure with a transnational velocity v m/s

Choices

Choice (4) Response
a.

2gh

b.

2gh

c.

107gh

d.

107gh

Question number: 99

» Rotational Motion » Angular Momentum

MCQ▾

Question

A uniform rod of length 2L is placed with one end in contact with the horizontal and is then inclined at an angle α to the horizontal and allowed to fall without slipping at contact point. When it becomes horizontal, its angular velocity will be

Choices

Choice (4) Response
a.

ω=6gsinαL

b.

ω=2L3gsinα

c.

ω=Lgsinα

d.

ω=3gsinα2L

Question number: 100

» Rotational Motion » Rigid Body Rotation Equations of Rotational Motion

MCQ▾

Question

The angular velocity of a body is ω=3i^+3j^+3k^ . A torque τ=2i^+4j^+3k^ acts on it. The rotational power is,

Choices

Choice (4) Response
a.

29 W

b.

27 W

c.

23 W

d.

25 W

Sign In