MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Angular Velocity

Angular momen...

Question

Angular momentum is conserved.

A

always

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

never

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

when external force is absent

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

when external torque is absent

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is C when external torque is absent
According to law of conservation of angular momentum if there is no torque on the system, then the angular momentum remains constant.

Suggest Corrections

thumbs-up

1

Similar questions

Q. Which of the following conditions are necessary for a rigid body to be in mechanical equilibrium?
Condition 1: Net external force acting on body is zero.
Condition 2: Net external torque acting on body is zero.
Condition 3: Internal forces and torque due to internal forces must be absent.

Q. Assertion (A): When a gramophone record starts rotating in a satellite then satellite starts rotating in opposite direction.
Reason (R) : Angular momentum of system of satellite and gramophone record is constant as there is no external torque.

For system on which no net external force acts, momentum is:

The momentum of the system is conserved if net external force is zero.

Q. A circular disc is rotating about its own axis. An external opposing torque of magnitude

0.02 N m

is applied on the disc, due to which it comes to rest in

5

seconds. The initial angular momentum of the disc is:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Relative

PHYSICS

Watch in App

explore_more_icon

Explore more

Angular Velocity

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon