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JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Self Evaluation Test - Laws of Motion

  • question_answer
    The elevator shown in fig. is descending with an acceleration of\[2\text{ }m/{{s}^{2}}\]. The mass of the block \[A=0.5\text{ }kg.\] The force exerted by the block A on block B is

    A) 2N 

    B) 4N

    C) 6N

    D) 8N

    Correct Answer: B

    Solution :

    [b] \[R=mg-ma=0.5\times 10-0.5\times 2=5-1=4N\]


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