2. Solved Papers
  3. WB JEE Medical

WB JEE Medical WB JEE Medical Solved Paper-2012

  • question_answer
    A box of mass 2 kg is placed on the roof of a car. The box would remain stationary until the carattains a maximum acceleration. Coefficient of static friction between the box and the roof of the car is 0.2 and \[g=10\,m{{s}^{-2}}.\] This maximum acceleration of the car, for the box to remain stationary, is

    A)  \[8\,m{{s}^{-2}}\]

    B)  \[6\,m{{s}^{-2}}\]

    C)  \[4\,m{{s}^{-2}}\]

    D)  \[2\,m{{s}^{-2}}\]

    Correct Answer: D

    Solution :

     Given,\[m=2kg,\,\mu =0.2\]and \[g=10m{{s}^{-2}}\] Here,       \[ma=\mu \,mg\] \[a=\mu g\] \[a=0.2\times 10\] \[a=2m/{{s}^{2}}\]


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