If moment of inertia of a circular disc ...

If moment of inertia of a circular disc that makes 20 revolutions per second is 20 kg `m^(2)` . Its angular momentum in `kg m^(2)//s`

A

2513

B

400

C

200

D

1216

Text Solution

Verified by Experts

The correct Answer is:

A

`L = I 2 pi n = 20xx2xx314xx20` ltbgt `= 8xx314=2512 kgm^(2)//s`.

Topper's Solved these Questions

QUESTION PAPER - MH-CET 2018
NIKITA PUBLICATION|Exercise MCQ|50 Videos
SEMICONDUCTORS
NIKITA PUBLICATION|Exercise MCQS|350 Videos

Similar Questions

Explore conceptually related problems

Moment of inertia of a body is 1 kg m2. If the body makes 2 revolutions per second, when its angular momentum is

If a body of moment of inertia 2kgm^2 revolves about its own axis making 2 rotations per second, then its angular momentum (in J s) is

A ring of mass 10 kg and diameter 0.4m is rotated about its axis. If it makes 2100 revolutions per minute, then its angular momentum (in kg m^(2)//s ) will be

The moment of inertia of a circular disc about its diameter is 500 kg m^(2) . If its radius is 2 m, than its radius of gyration is

A circular ring of mass 1kg and radius 0.2m executes 10 revolutions per sec. Its angular momentum would be - (kg- m^2 /sec)

The kinetic energy of a body rotating at 300 revolutions per minute is 62.8 J. Its angular momentum (in kg m^(2)s^(-2) ) is approximately

The moment of inertia of a circular disc about an axis passing through its centre and perpendicular to the plane is 4 kg m^(2) . Its moment of inertia about the diameter is

A wheel of moment of inertia 5xx10^(-3) kg m^(2) is making 20 revolutions per second. If it is stopped in 20 s, then its angular retardation would be

The moment of inertia of a circular disc about an axis passing through its centre and normal to its plane is "50 kg - m"^(2) . Then its moment of inertia about a diameter is

If moment of inertia of a solid sphere of mass 5kg about its diameter is 50kg m^(2) . Its moment of inertia about its tangent in kg m^(2) is

NIKITA PUBLICATION-ROTATIONAL MOTION -MULTIPLE CHOICE QUESTIONS

Two wheels A and B are mounted on the same axle. Moment of inertia of ...
Text Solution
|
A particle of mass m is rotating in a plane in circular path of radius...
Text Solution
|
If moment of inertia of a circular disc that makes 20 revolutions per ...
Text Solution
|
If a uniform solid sphere of diameter 0.2 m and mass 10 kg is rotated ...
Text Solution
|
Mass remaining constant, if the earth suddenly contracts to one third ...
Text Solution
|
If the radius of the earth decreases by 20% such that mass does not ch...
Text Solution
|
A uniform disc of mass M and radius R is rotating in a horizontal plan...
Text Solution
|
A dancer spins about himself with an angular speed omega, with his arm...
Text Solution
|
A disc of mass 2 kg and radius 0.2 m is rotating about an axis passing...
Text Solution
|
The diameter of a disc is 1m. It has a mass of 20kg. It is rotating ab...
Text Solution
|
M.I. of a uniform horizontal solid cylinder of mass M about an axis pa...
Text Solution
|
The moment of inertia of a circular ring about an axis passing through...
Text Solution
|
A circular disc P of radius R is made from an iron plate of thickness ...
Text Solution
|
Two solid sphere (A and B) are made of metals of different densities r...
Text Solution
|
The M.I. of a circular ring of radius R and mass M about a tangent in ...
Text Solution
|
The moment of inertia of a uniform circular ring, having a mass M and ...
Text Solution
|
The mass of a thin circular plate is M and its radius is R. About an a...
Text Solution
|
The M.I. of disc of mass M and radius 'R' about an axis passing throug...
Text Solution
|
The moment of inertia of a disc of mass M and radius R about a tangent...
Text Solution
|
The moment of inertia of a disc of mass M and radius R about a tangent...
Text Solution
|