Rotational Motion (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 99 - 103 of 125

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 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: 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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 100

» Rotational Motion » Rigid Body Rotation Equations of Rotational Motion

MCQ▾

Question

The angular velocity of a body is Equation . A torque Equation acts on it. The rotational power is,

Choices

Choice (4) Response

a.

29 W

b.

27 W

c.

23 W

d.

25 W

Question number: 101

» Rotational Motion » Moment of Inertia

MCQ▾

Question

The moment of inertia of a circular ring about an axis passing through its center and normal to its plane is 200 gm ⨯ cm 2. Then moment of inertia about its diameter is,

Choices

Choice (4) Response

a.

400 gm ⨯ cm 2

b.

100 gm ⨯ cm 2

c.

200 gm ⨯ cm 2

d.

300 gm ⨯ cm 2

Question number: 102

» Rotational Motion » Rotational Kinetic Energy

MCQ▾

Question

A sphere is rolling without slipping on a horizontal plane. The ratio of its rotational kinetic energy and translation kinetic energy is,

Choices

Choice (4) Response

a.

2: 9

b.

2: 3

c.

2: 5

d.

2: 7

Question number: 103

» Rotational Motion » Moment of Inertia

MCQ▾

Question

From a circular disc of radius R and mass 9 M, a small disc of radius Equation is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is,

A small portion of radius R/3 is removed from thedisc ofradiusR

A Small Portion of Radius R/3 Is Removed From Thedisc ofradiusR

Figure shows that circular disc of radius R and mass 9 M, a small disc of radius R/3 is removed from the disc.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

f Page
Sign In