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

  • question_answer
    A rocket with a lift-off mass \[3.5\times {{10}^{4}}\] kg is blasted   upwards   with   an   initial acceleration of \[10\,m/{{s}^{2}}\] . Then, the initial thrust of the blast is                                    [AIEEE 2003]

    A) \[3.5\times {{10}^{5}}\] N

    B) \[7.0\times {{10}^{5}}\] N

    C) \[14.0\times {{10}^{5}}\] N

    D) \[1.75\times {{10}^{5}}\] N

    Correct Answer: A

    Solution :

    [a] Here, thrust force is responsible to accelerate the rocket, so initial thrust of the blast
                \[=ma=3.5\times {{10}^{4}}\times 10\]
                \[=3.5\times {{10}^{5}}N\]

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