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A particle of mass m is rotating in a pl...

A particle of mass `m` is rotating in a plane in circular path of radius `r`. Its angular momentum is `L`. The centripetal force acting on the particle is

A

`J^2/(mr^2)`

B

`J^2/(mr^2)`

C

`(J^2 r^2)/m`

D

`J^2 m`

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The correct Answer is:
B
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MOTION-ROTATIONAL MOTION -Exercise - 1
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  2. Which quantity is not directly related with rotational motion

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  3. A particle of mass m is rotating in a plane in circular path of radius...

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  4. When a mass is rotating in a plane about a fixed point, its angular mo...

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  5. The rotational kinetic energy is -

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  6. A rigid body is rotating about an axis. The best way to stop it is app...

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  7. A constant torque acting on a uniform circular wheel changes its anglu...

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  8. The rate of change of angular momentum is called

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  9. When a constant torque is applied on a rigid body, then

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  10. If torque is zero, then

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  11. The grinding stone of a flour mill is rotating at 600 rad/sec. for thi...

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  12. A fly wheel of moment of inertia I is rotating at n revolutions per se...

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  13. A circular disc has a mass of 1kg and radius 40 cm. It is rotating abo...

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  14. The rotational kinctic energy of a body rotating about proportional to

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  15. When different regular bodies roll down along an inclined plane from r...

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  16. A solid cylinder starts rolling from a height h on an inclined plane. ...

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  17. A ring of mass 1kg and diameter 1m is rolling on a plane road with a s...

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  18. A disc is rolling without slipping. The ratio of its rotational kineti...

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  19. A cylinder of mass M and radius R rolls on an inclined plane. The gain...

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  20. A hoop having a mass of 1kg and a diameter of 1 meter rolls along a le...

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