JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Critical Thinking Questions

  • question_answer
    The mass of a body measured by a physical balance in a lift at rest is found to be m. If the lift is going up with an acceleration a, its mass will be measured as    [MP PET 1994]

    A)             \[m\left( 1-\frac{a}{g} \right)\]            

    B)               \[m\left( 1+\frac{a}{g} \right)\]            

    C)             m                    

    D)             Zero

    Correct Answer: C

    Solution :

                    Mass measured by physical balance remains unaffected due to variation in acceleration due to gravity.            


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