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If no external force acts on a system...

If no external force acts on a system

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The centre of mass of such a system remains at rest.
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Select the correct alternative. When there is no external force acting on a system of particles,

A nonzero external force acts on a system of particles. The velocity and the acceleration of the centre of mass are found to be v_(0) "and"a_(0) at an instant t. It is possible that:

A smooth ball 'A' moving with velocity 'V' collides with another smooth identical ball at rest. After collision both the balls move with same speed with angle between their velocities 60^(@) . No external force acts on the system of balls. If the kinetic energy lost is fully converted to heat then heat produced is

A smooth ball 'A' moving with velocity 'V' collides with another smooth identical ball at rest. After collision both the balls move with same speed with angle between their velocities 60^(@) . No external force acts on the system of balls. The value of coefficient of resititution is

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AAKASH INSTITUTE ENGLISH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Try Yourself
  1. If no external force acts on a system

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  2. Two bodies of masses 1kg and 3kg are lying in xy plane at (0,0) and (2...

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  3. Three point masses of 1kg, 2kg and 3kg lie at (0,0), (1,2), (3,-1) res...

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  4. Three particles of masses m,m and 4kg are kept at a verticals of trian...

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  5. Three particles having their masses in the ratio 1 : 3 : 5 are kept at...

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  6. Centre of mass of the system lies inside disc or square plate and why ...

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  7. Two particles of equal mass are moving along the same line with the sa...

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  8. Two particles of equal mass are moving along the same straight line wi...

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  9. A shell following a parabolic path explodes somewhere in its flight. T...

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  10. All the particles are situated at a distance R from the origin. The di...

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  11. Will the velocity and acceleration of centre of mass change if particl...

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  12. vecA=(3hati+2hatj-6hatk) and vecB=(hati-2hatj+hatk), find the scalar p...

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  13. vecA=(hati-2hatj+6hatk) and vecB=(hati-2hatj+hatk), find the cross pro...

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  14. Find a unit vector in the direction of vector vecA=(hati-2hatj+hatk)

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  15. Find a vector perpendicular to vector vecA=(hati+2hatj-3hatk) as well ...

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  16. The angular displacement of a particle is 24 rad in 10 seconds. Calcul...

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  17. The angular velocity of a rigid body is 24 rad s^(-1), Calculate the t...

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  18. The angular velocity of circular disc of radius 2cm is 20 rad s^(-1). ...

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  19. What is the angular velocity of a particle lying on the axis of rotati...

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  20. What is the angular acceleration of a particle moving with constant an...

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  21. A wheel is rotating with an angular velocity of 3 rad s^(-1). If the a...

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