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The behaviour of a body under zero resul...

The behaviour of a body under zero resultant force is given by .

A

first law of motion

B

second law of motion

C

third law of motion

D

law of gravitation

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The correct Answer is:
A
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Knowledge Check

  • Two forces, with equal magnitude F, act on a body and the magnitude of the resultant force is F/3 . The angle between the two forces is:

    A
    `cos^(-1)(-17/18)`
    B
    `cos^(-1)(-1/3)`
    C
    `cos^(-1) (2/3)`
    D
    `cos^(-1) (8/9)`

  • Two forces with equal magnitudes F act on a body and the magnitude of the resultant force is F /3. The angle between the two forces is

    A
    `cos^(-1)(-(17)/(18))`
    B
    `cos^(-1)(-(1)/(3))`
    C
    `cos^(-1)((2)/(3))`
    D
    `cos^(-1)((8)/(9))`

  • Assertion : The forces acting on a body can be replaced by the resultant force only as regards the motion of the body as a whole. Reason : The resultant force can not replace the several forces acting on a body in other respects.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.
    • NARAYNA-NEWTONS LAWS OF MOTION-C.U.Q
    1. The behaviour of a body under zero resultant force is given by .

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    2. Which law of Newton defines an 'inertial frame of reference' ? .

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    3. The statement ''acceleration is zero if and only if the net force is z...

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    4. You move forward when your car suddenly come to a halt and you are thr...

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    5. You are thrown outer side when your car suddenly takes a turn. Which l...

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    6. An object is thrown vertically upward with some velocity. If gravity i...

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    7. Which of the following is the most significant law of motion given by ...

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    8. The quantity of motion of a body is best represented by .

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    9. A certain particle undergoes erratic motion. At very point in its moti...

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    10. Inside a railway car a plumb bob is suspended from the roof and a heli...

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    11. A constant force (F) is applied on a stationary particle of mass 'm' T...

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    12. A constant force (F) is applied on a stationary particle of mass 'm' T...

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    13. A force produces an acceleration of a(1) in a body and the same force ...

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    14. The keep a particle moving with constant velocity on a frictionless su...

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    15. If action force acting on a body is gravitational in nature, then reac...

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    16. Action and reaction can never balance out because

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    17. The propulsion of a rocket is based on the principle of condservation ...

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    18. An automobile that is towing a trailer is accelerating on a level road...

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    19. A man is standing in the middle of a perfectly smooth 'island of ice' ...

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    20. Which law of Newton reveals the underlying symmetry in the forces that...

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