JEE Main & Advanced Physics NLM, Friction, Circular Motion JEE PYQ - NLM Friction Circular Motion

  • question_answer
    A satellite moving with velocity v in a force free space collects stationary interplanetary dust at a rate of\[\frac{dM}{dt}=\alpha v\] where M is the mass (of satellite dt + dust) at that instant. The instantaneous acceleration of the satellite is [JEE ONLINE 26-05-2012]

    A) \[-\frac{\alpha {{v}^{2}}}{2M}\]

    B) \[-\frac{\alpha {{v}^{2}}}{M}\]

    C) \[-\alpha {{v}^{2}}\]   

    D) \[-\frac{2\alpha {{v}^{2}}}{M}\]

    Correct Answer: B

    Solution :

    [b]\[{{a}_{inst}}=\frac{\alpha {{V}^{2}}}{M}\]


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