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What is the advantage of concept of cent...

What is the advantage of concept of centre of mass ?

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The concept of centre of mass enables us to describe the behaviour of a mascrospic bodies in terms of the laws developed for the microscopic bodies.
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Knowledge Check

  • Consider a system of two spheres of masses 5 kg and 25 kg. The distance between their centres is 1.2 m. What is the distance of their centre of mass from the centre of the sphere of mass 5 g?

    A
    0.5m
    B
    0.6m
    C
    08m
    D
    1m
    • PRADEEP-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-CONCEPTUAL PROBLEMS
    1. What is the advantage of concept of centre of mass ?

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    2. Prove that the centre of mass of two particle divides the line joining...

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    3. In a stationary railway compartment, there are several passengers. If ...

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    4. A body A of mass M while falling wertically downwards under gravity br...

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    5. Can centre of mass of a body coincide with the geometrical centre of t...

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    6. An insulated particle of mass m is moving in a horizontal plane (x - y...

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    7. Which physical quantities are expressed by the following : (i) rate ...

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    8. Torque and work are both equal to force time distance. How do they dif...

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    9. If a body is rotating, is it necessarily being acted upon by an extern...

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    10. Why is the handle of a screw made wide ?

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    11. A particle is moving along a stright line parallel to x-axis with cons...

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    12. A particle performing uniform circular motion has angular frequency is...

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    13. Does the moment of inertia of abody change with the speed of rotation...

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    14. What is the advantage of a flywheel ?

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    15. Why spokes are provided in a bicycle wheel ?

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    16. The moment of inertia of a soild sphere about a tangent is (5)/(3)mr^(...

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    17. Find radius of gyration of a rod of length l and mass m about an axis ...

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    18. For a given mass and size, moment of inertia of a soild disc is smalle...

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    19. In a fly wheel, most of the mass is concentrated at the rim ? Explain ...

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    20. Two satellites of equal masses, which can be considered as particles a...

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