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

Byju's Answer

Standard XII

Physics

Frequency

A circular di...

Question

A circular disc of radius R is rotating about its axis with uniform angular velocity w rad/sec. The angle subtended at the centre between two points p and q on the circumference is 120degree. Find the change in magnitude of relative velocity of point p relative to q

Open in App

Solution

Suggest Corrections

Similar questions

Q. A uniform circular disc of mass

50 k g

and radius

0.4 m

is rotating with an angular velocity of

10 r a d s^{- 1}

about its own axis, which is vertical. Two uniform circular rings, each of mass

6.25 k g

and radius

0.2 m

, are gently placed symmetrically on the disc in such a manner that they are touching each other along the axis of the disc and are horizontal. Assume that the friction is large enough such that the rings are at rest relative to the disc and the system rotates about the original axis. The new angular velocity (in

r a d s^{- 1}

) of the system is:

Q. A uniform circular disc of mass

1 kg

and radius

0.5 m

is rotating about its axis with a constant angular velocity

5 rad/sec

. Two birds, each of mass

0.25 kg

sit gently at the opposite ends of the diameter of the disc. The final angular velocity of the disc will be

Q. A uniform circular disc of mass

1 kg

and radius

0.5 m

is rotating about its axis with a constant angular velocity

5 rad/sec

. Two birds, each of mass

0.25 kg

sit gently at the opposite ends of the diameter of the disc. The final angular velocity of the disc will be

A conducting disc of radius r rotates with a small but constant angular velocity w about its axis. A uniform magnetic field B exists parallel to the axis of rotation. Find the motional emf between the centre and the periphery of the disc.

Q. A smooth horizontal disc rotates with a constant angular velocity

ω

about a stationary vertical axis passing through its centre, the point

O

. At a moment

t = 0

a disc is set in motion from that point with velocity

v_{0}

. Find the angular momentum

M (t)

of the disc relative to the point

O

in the reference frame fixed to the disc. Make sure that this angular momentum is caused by the Coriolis force.

Join BYJU'S Learning Program