2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Gravitation / गुरुत्वाकर्षण

JEE Main & Advanced Physics Gravitation / गुरुत्वाकर्षण Question Bank Motion of Satellite

  • question_answer
    The distance between centre of the earth and moon is 384000 km. If the mass of the earth is \[6\times {{10}^{24}}kg\] and \[G=6.66\times {{10}^{-11}}N{{m}^{2}}/k{{g}^{2}}\]. The speed of the moon is nearly                                      [MH CET 2002]

    A) 1 km/sec

    B)               4 km/sec

    C)             8 km/sec

    D)               11.2 km/sec

    Correct Answer: A

    Solution :

                    \[v=\sqrt{\frac{GM}{r}}=\sqrt{\frac{6.67\times {{10}^{-11}}\times 6\times {{10}^{24}}}{384000\times {{10}^{3}}}}=1\,km/s\]


You need to login to perform this action.
You will be redirected in 3 sec spinner