MyQuestionIcon

1

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

Rotation + Translation

Speed of COM ...

Question

Speed of COM of a 20 Kg disc of radius 1m is 5 m/s. The angular velocity is 4 rad/s/s. Find rotational KE.

A

100 J

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

B

120 J

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

C

80 J

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

D

150 J

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

Open in App

Solution

The correct option is C 80 J

Suggest Corrections

thumbs-up

0

Similar questions

Q. Speed of COM of a 20 Kg disc of radius 1m is 5 m/s. The angular velocity is 4 rad/s/s. Find rotational KE.

Q. Speed of COM of a 10 Kg disc of radius 1m is 5 m/s. The angular velocity is 4 rad/s/s. Find translational KE.

Q. A disc of mass

1

0.1

m is rotating with angular velocity

20 r a d / s

. What is angular velocity (in rad/s) if a mass of

0.5

kg is put on the circumference of the disc?

Q. A disc of mass 2 kg arid radius 0.2 m is rotating with angular velocity 30 rads

^{- 1}

. What is angular velocity, if a Mass of 0.25 kg is put on periphery of the disc?

Q. A flywheel of mass

2

20

cm has an angular speed

50

r a d s^{- 1}

. When a clutch plate of mass

4

10

cm having an angular speed

200

r a d s^{- 1}

is combined with it. Find the common speed of rotation.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Rotation and Translation

PHYSICS

Watch in App

explore_more_icon

Explore more

Rotation + Translation

Standard XIII Physics

Join BYJU'S Learning Program

CrossIcon