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If the external forces acting on a syste...

If the external forces acting on a system have zero resultant, the centre of maas

A

must not move

B

will accelerate

C

may move

D

may accelerate

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The correct Answer is:
C
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RESONANCE-CENTRE OF MASS-Exercise
  1. If momentum of two objects are of same magnitude. Then speed of lighte...

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  2. A body has its centre of maas at the origin. The x-coordinates of the ...

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  3. In which of the following cases the centre of mass of a system is cert...

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  4. If the external forces acting on a system have zero resultant, the cen...

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  5. In an elastic collision in absence of external force, which of the fol...

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  6. Find the position of centre of mass of the section shown in figure

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  7. A man of mass M hanging with a light rope which is connected with a ba...

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  8. Three particles of masses 20g, 30g and 40g are initially moving along ...

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  9. Velocity of a particle of mass 2kg varies with time t according to the...

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  10. A bullet of mass a and velocity b is fired into a large block of mass ...

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  11. A force - time graph for a linear motion is shown in the figure where ...

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  12. Five identical elastic balls are so suspended with strings of equal le...

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  13. A particle of mass m moving with velocity u(1) collide elastically wit...

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  14. Which of the following does not hold when two particles of masses m(1)...

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  15. The coefficient of restitution ( e) for a perfectly elastic collision ...

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  16. In one-dimensional elastic collision, the relative velocity of approac...

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  17. Consider the elastic collision f two bodies A and B of equal mass. Ini...

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  18. A body of mass M(1) collides elastically with another mass M(2) at res...

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  19. When two bodies collide elastically, the force of interaction between ...

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  20. Statement-1: The centre of mass of body may lie where there is no mass...

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