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Write the equation for the CM of two poi...

Write the equation for the CM of two point masses when (i) Masses are on positive x-axis, (ii) Origin coincides with any one of the masses, (iii) origin coincides with CM itself.

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(i) `X_(CM)=(m_(1)x_(1)+m_(2)x_(2))/(m_(1)+m_(2))`
(ii) `X_(CM)=(m_(2)x_(2))/(m_(1)+m_(2))`
(iii) `m_(1)x_(1)=m_(2)x_(2)`
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PREMIERS PUBLISHERS-MOTION OF SYSTEM OF PARTICLES AND BODIES-OTHER IMPORTANT QUESTIONS & ANSWER (SHORT ANSWER QUESTIONS)
  1. What do you understand by the term precession?

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  2. Distinguish between internal and external forces.

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  3. Write the Cartesian co -ordinate (x,y,z) of the centre of mass for the...

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  4. Write the equation for the CM of two point masses when (i) Masses are ...

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  5. Distinguish between centre of mass and centre of gravity.

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  6. Write an expression for Cartesian co-ordinates of the CM for uniform d...

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  7. Show that in the absence of any external force, the velocity of CM rem...

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  8. Does the radius of gyration depend upon the speed of rotation of the b...

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  9. Explain Right hand rule to find the direction of Torque.

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  10. Why a force is applied at right angles to the heavy door at the outer ...

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  11. List the points to be considered while calculating the torques on rigi...

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  12. Deduce the relation between torque and angular acceleration.

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  13. Can the couple acting on a rigid body produce translatory motion?

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  14. Define angular momentum.

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  15. Which physical quantities are expressed by the following? (i) moment...

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  16. List of condition on which angular momentum is zero.

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  17. Distinguish between translational and rotatinal equilibrium.

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  18. Inertia of the body depends on

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  19. Find the relation between power and torque.

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  20. What do you understand by the term precession?

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