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A metre stick is balanced on a knife edg...

A metre stick is balanced on a knife edge at its centre. When two coins, each of mass 5 g are put one on top of the other at the 12.0 cm mark, the stick is found to be balanced at 45.0 cm. What is the mass of the metre stick?

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`66.0 g`
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NCERT GUJARATI-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-EXERCISES
  1. (a) A child stands at the centre of a turntable with his two arms outs...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. A solid disc and a ring, both of radius 10 cm are placed on a horizont...

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  19. A cylinder of mass 10 kg and radius 15 cm is rolling perfectly on a pl...

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  20. Separation of Motion of a system of particles into motion of the centr...

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