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What is a rigid body?...

What is a rigid body?

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SL ARORA-System of particles & rotational Motion-EXERCISE
  1. Write an expression for the centre of mass of& two partide system

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  2. Write an expression for the velocity of the centre of mass of a system...

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  3. What is a rigid body?

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  4. Name the rotational analogue of force. What are its units ?

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  5. Is torque a scalar or vector ? If it is a vector, what rule is used to...

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  6. The dimensional formula of torque is

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  7. If 'muscle times speed equals power', then what is the ratio of the SI...

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  8. Under what condition, the three vectors (i) cannot giv zero resultant ...

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  9. When a steady toqrue or couple acts on a body, the body

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  10. Write the dimensional formula of angular momentum. Is it scale or vect...

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  11. Write SI unit of angular momentum:

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  12. What is the ratio of the SI unit to the CGS unit of angular momentum ?

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  13. Name the physical quantity whose dimensions are same as that of angula...

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  14. Which physical quantity is conserved when a planet revolves around the...

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  15. A planet revolves around the sun under the effect of gravitational for...

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  16. A boat is likely to capsize if the persons in the boat stand up. Why ?

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  17. What is angular velocity of earth spinning around its own axis ?

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  18. Is the angular speed of rotation of hour hand of a watch greater or sm...

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  19. Name the rotational analogue of linear acceleration.

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  20. Is moment of inertia a scalar or a vector ?

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