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A solid cylinder of mass 20 kg rotates a...

A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad `s^(-1)`. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?

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Kinetic Energy = 3125 J, Angular Momentum = 62.5 J s
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NCERT GUJARATI-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-EXERCISES
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  2. Torques of equal magnitude are applied to a hollow cylinder and a soli...

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  3. A solid cylinder of mass 20 kg rotates about its axis with angular spe...

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  4. (a) A child stands at the centre of a turntable with his two arms outs...

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  5. A rope of negligible mass is wound round a hollow cylinder of mass 3 k...

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  6. To maintain a rotor at a uniform angular speed of 200 rad s-1, an engi...

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  7. From a uniform disk of radius R, a circular hole of radius R/2 is cut ...

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  8. A metre stick is balanced on a knife edge at its centre. When two coin...

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  9. A solid sphere rolls down two different inclined planes of the same he...

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  10. A hoop of radius 2 m weighs 100 kg. It rolls along a horizontal floor ...

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  11. The oxygen molecule has a mass of 5.30 × 10^(-26) kg and a moment of i...

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  12. A solid cylinder rolls up an inclined plane of angle of inclination 30...

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  13. As shown in Fig.7.40, the two sides of a step ladder BA and CA are 1.6...

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  14. A man stands on a rotating platform, with his arms stretched horizonta...

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  15. A bullet of mass 10 g and speed 500 m/s is fired into a door and gets ...

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  16. Two discs of moments of inertia I(1) and I(2) about their respective a...

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  17. (a) Prove the theorem of perpendicular axes. (b) Prove the theorem o...

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  18. Prove the result that the velocity v of translation of a rolling body ...

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  19. A disc rotating about its axis with angular speed ω(o) is placed light...

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  20. Explain why friction is necessary to make the disc in Fig. 7.41 roll i...

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