2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. NLM, Friction, Circular Motion

JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Second Law of Motion

  • question_answer
    The linear momentum p of a body moving in one dimension varies with time according to the equation \[p=a+b{{t}^{2}}\] where a and b are positive constants. The net force acting on the body is                              [Pb. PET 2002]

    A)             A constant

    B)             Proportional to \[{{t}^{2}}\]

    C)             Inversely proportional to t

    D)             Proportional to t

    Correct Answer: D

    Solution :

                    \[F=\frac{dp}{dt}\bar{=}\frac{d}{dt}(a+b{{t}^{2}})=2bt\]\ \[F\propto t\]


You need to login to perform this action.
You will be redirected in 3 sec spinner