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A : For a body to be in rotational equil...

A : For a body to be in rotational equilibrium the net torque acting on the body about any point is zero.
R : For net torque to be zero, net force should also be zero.

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If the rotation is uniform, torque will be zero.
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ICSE-CIRCULAR MOTION -MODULE 2 (SHORT ANSWER QUESTIONS)
  1. When the axis of rotation of a body changes does moment of inertia als...

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  2. Two equal and opposite forces act on a rigid body at a certain distanc...

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  3. A : For a body to be in rotational equilibrium the net torque acting o...

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  4. Using the S.I. units of torque and angular acceleration show that the ...

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  5. "The rotational vectors are represented by straight lines lying along ...

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  6. Show on a diagram the vector that would represent the angular velocity...

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  7. For calculating the moment of inertia of a body can we assume the whol...

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  8. Derive an equation for the angle covered by, a rotating rigid body in ...

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  9. Define moment pf inertia. Name the factors on which the moment of iner...

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  10. What is the physical significance of moment of inertia ?

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  11. Radius of gyration has the unit

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  12. Name a physical quantity which has the same dimensions as that of torq...

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  13. What is the torque exerted by the gravitational force of sun on the ea...

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  14. If there is no external force acting on a nonrigid body, which of the ...

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  15. An electron moves round the nucleus of an atom, in a circular path. Wh...

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  16. Show that the torque acting on a body is equal to the product of momen...

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  17. The angular momentum of a body with mass (m) moment of inertia (I) and...

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  18. The dimensional formula for angular momentum is

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  19. Write down the relation connecting torque and angular momentum ?

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  20. State and prove the law of conservation of angular momentum.

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