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JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Work Done by Constant Force

  • question_answer
    A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particle takes place in a plane. It follows that                            [AIEEE 2004]

    A)             Its velocity is constant

    B)             Its acceleration is constant      

    C)             Its kinetic energy is constant   

    D)             It moves in a straight line

    Correct Answer: C

    Solution :

                    When a force of constant magnitude which is perpendicular to the velocity of particle acts on a particle, work done is zero and hence change in kinetic energy is zero.


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