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Show that if the force acting on a parti...

Show that if the force acting on a particle is zero , its momentum will remain unchanged.

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According to Newton ' s second law of motion ,
` F = (d)/(dt) When F = 0 , (dp)/(dt) = 0 or P` = constant.
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Knowledge Check

  • If resultant of forces acting on a system is zero then

    A
    Work done by each force must be zero .
    B
    Total work done by all forces must be zero .
    C
    Total work done by all the forces may be non - zero
    D
    Kinetic energy of the system must remain constant .

  • Assertion: To conserve linear momentum of a system, no force should act on the system. Reason: If net force on a system is zero, its linear momentum should remain constant.

    A
    If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

  • IF p is the magnitude of linear momentum of a particle executing a uniform circular motion, then the ratio of centripetal force acting on the particle to its linear momentum is given by

    A
    `r/v`
    B
    `(v^2)/(mr)`
    C
    `v/r`
    D
    v.r

    • Similar Questions

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    TRUE/FALSE TYPE QUESTIONS: If the net force acting on a body is zero, the body will remain necessarily at rest position.

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    If the resultant of all the external forces acting on a system of particles is zero, then from an inertial frame, one can surely say that

    Consider the following statements: If the net external torque acting on an object is switched off, then - 1. Linear momentum will remain unchanged. 2. Angular momentum will remain unchanged. Which of the statements given above is/are correct?

    Statement-1: If the resultant of all the forces acting on a system is zero then the torque on the system about any point is same. Statement-2: If the resultant of the forces acting on a system is zero then acceleration of its centre of mass is zero.

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