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JEE Main & Advanced Physics Rotational Motion Question Bank Self Evaluation Test - System of Particles Rotational Motion

  • question_answer
    A toy car rolls down the inclined plane as shown in the fig. It loops at the bottom. What is the relation between H and h? 

    A) \[\frac{H}{h}=2\]         

    B) \[\frac{H}{h}=3\]

    C) \[\frac{H}{h}=4\]         

    D) \[\frac{H}{h}=5\]

    Correct Answer: D

    Solution :

    [d] Velocity at the bottom and top of the circle is \[\sqrt{5gr}\]and\[\sqrt{gr}\].Therefore \[(1/2)M(5gr)=MgH\] And\[\text{(1}/2\text{)}M(gr)=MgH\].


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