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Railways NTPC (Technical Ability) Engineering Mechanics and Strength of Materials Question Bank Engineering Mechanics

  • question_answer
      Crushed ore is dropped on a conveyor belt at the rate of 300 kg/s. The belt moves, it speed of 2 m/s. the net force acting on the belt that keeps it moving at the same speed is:                            

    A) 30 N                            

    B) 60 N             

    C) 300 N/m                       

    D) 600 A           

    Correct Answer: D

    Solution :

    \[F=ma=300\times 2=600\,\,N\]


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