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For a system to be in equilibrium the to...

For a system to be in equilibrium the torques acting on it must balance. This is true only if the torques are taken about

A

the centre of the system

B

the centre of mass of the system

C

any point on the system

D

any point on the system or outside it

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The correct Answer is:
D
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AAKASH SERIES-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-EXERCISE - 1A
  1. A body moves along an uneven horizontal road surface with constant spe...

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  2. In gravity- free space, a particle is in contact with the inner surfac...

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  3. For a system to be in equilibrium the torques acting on it must balanc...

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  4. A rectangular block has a square base measuring a xx a, and its height...

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  5. A man spinning in free space change the moment of inertia of his body ...

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  6. An external device, e.g., an electric motor, supplies constant power t...

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  7. Three identical solid spheres moves down three incline A, B and C - al...

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  8. A small ball strikes a stationary unbiform rod, which is free to rotat...

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  9. The earth rotats from west to east. A wind mass begains moving due nor...

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  10. When a disc rotates with uniform angular velocity, which of the follow...

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  11. A uniform square plate in xy plane has a small piece Q of an irregular...

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  12. The net external torque on a system of particles about an axis is zero...

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  13. Choose the correct alternatives :

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  14. A child sits stationary at one end of a long trolley moving uniformly ...

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  15. (a) Algebraic sum of moments of masses about cenre of mass is zero ...

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  16. A trolley filled with sand moves on a smooth horizontal surface with a...

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  17. In which of the following cases the centre of mass of a rod is certain...

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  18. Identify the correct statement. In the absence of external force, ...

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  19. P is the centre of mass of a system of four point masses A, B, C and D...

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  20. Mass of a ring is non - uniformly distributed around its geometric cen...

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