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8th Class Science Friction Question Bank Friction Formative Objective Problems

  • question_answer
    A body of mass 25 kg, is placed on a horizontal surface whose coefficient of friction 0.25. Find the frictional force action on it. Take (\[g=10m{{s}^{-2}}\])

    A)  150 N                   

    B)  175 N  

    C)  62.5 N                 

    D)  53.3 N

    Correct Answer: C

    Solution :

      Frictional force \[F=\mu \times mg\] Given, \[m=25\text{ }kg\] \[\mu =0.25,\text{ }g=10\text{ }m{{s}^{-2}}\] \[F=0.25\times 25\times 10=62.5\text{ }N\] The correct answer is C


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