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A wheel of moment of inertia 30 kg m^(2)...

A wheel of moment of inertia `30 kg m^(2)` is rotating at `10` rotations per minute. The work done in increasing its speed to `5` times its initial value will be

A

`10pi^(2) J`

B

`20 pi^(2) J`

C

`30 pi^(2) J`

D

`40 pi^(2) J`

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AAKASH INSTITUTE ENGLISH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Assignment (Section - A) Objective Type Questions (One option is correct)
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  2. If I(1) is the moment of inertia of a thin rod about an axis perpendic...

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  3. A wheel of moment of inertia 30 kg m^(2) is rotating at 10 rotations p...

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  4. A ring of mass 1kg and radius 1m is moving with a velocity of 1m//s by...

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  5. A disc and a ring of the same mass are rolling down frictionless incli...

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  6. The moment of inertia of a thing uniform rod of length L and mass M, a...

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  7. Two bodies with moment of inertia l(1) and l(2) (l(1) gt l(2)) have eq...

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  8. From a circular disc of mass M and radius R, a part of 60^(@) is remov...

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  9. A body is rolling without slipping on a horizontal plane. The rotation...

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  10. The angular velocity of a body is vecomega=3hati+5hatj+6hatk("radian"/...

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  11. When a solid cylinder rolls without slipping the ratio of kinetic ener...

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  12. The torque required to stop a wheel having moment of inertia 5xx10^(-3...

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  13. The position vector of a point is (3hati-2hatj+6hatk)m. The i^(th) com...

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  14. A particle performing uniform circular motion gas angular momentum L. ...

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  15. A thin wire of length l and mass m is bent in the form of a semicircle...

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  16. A constant torque acting on a uniform circular wheel changes its angul...

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  17. Which of the following is correct ? (symbols have their ususal meaning...

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  18. A dancer on ice spins faster when she folds her arms due to

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  19. A solid sphere of radius r and mass m rotates about an axis passing th...

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  20. The moment of inertia of a solid cylinder of density rho, radius of ba...

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