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"The rotational vectors are represented ...

"The rotational vectors are represented by straight lines lying along axis of rotation". Why ?

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Because they are axial vectors, They result from the vector product of two vectors.
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ICSE-CIRCULAR MOTION -MODULE 2 (SHORT ANSWER QUESTIONS)
  1. A : For a body to be in rotational equilibrium the net torque acting o...

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

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

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

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

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

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

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

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  9. Radius of gyration has the unit

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

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

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

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

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

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

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  16. The dimensional formula for angular momentum is

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

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

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  19. Write down the equation for the work done in rotatory motion.

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  20. Derive an expression for the rotational kinetic energy.

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