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Statement A : Whrn no external force act...

Statement A : Whrn no external force acts on a body its centre of mass will be at rest or under uniform motion.
Statement B : When a force acts on a body at its centre of mass then will have only translation motion

A

only A is correct

B

only B is correct

C

both A and B are correct

D

Both A and B are wrong

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Exercise-I
  1. A tank filled water is connected to another empty tank lying to the ri...

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  2. Statement A : When an iron sphere on the ground is heated its centre o...

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  3. Statement A : Whrn no external force acts on a body its centre of mass...

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  4. Statements : (a) In translatory motion each point of the body expe...

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  5. Statements : (a) Centre of mass is that fixed point of a system of p...

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  6. Statements : (a) Position of C.m depends on acceleration due to grav...

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  7. Statements : (a) Ration of the distance of the centre of mass of a...

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  8. The centre of mass of the system of particles depends on (a) masse...

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  9. Statements : (a) Allgebric sum of moments of mass about centre of ma...

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  10. If no external force acts on the system (a) Acleleration of centre...

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  11. Statements : (a) The motion of the centre of mass can be studied u...

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  12. Statements : (a) Motion of centre of mass depends on external forc...

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  13. The moon moves around the earth in a circular orbit and the earth move...

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  14. A particle moves along a horizontal circle witrr constant speed. If 'a...

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  15. Identify the increasing order of the angular velocities of the followi...

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  16. When a body is whirled in a vertical circle such that its total mechan...

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  17. Moment of inertia of a rigid body depends on (A) Mass of body (...

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  18. Statement - A : If a uniform metal disc is remoulded into a solid sphe...

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  19. Consider the following two statements. (A) Linear momentum of the ...

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  20. Identify the correct order in which the values of M.I. decreases for t...

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