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    Question

    A man inside an artificial satellite feels

    weightlessness because the force of attraction due to earth is –
    A zero at that place Correct Answer Incorrect Answer
    B is balanced by the force of attraction due to moon Correct Answer Incorrect Answer
    C equal to the centripetal force Correct Answer Incorrect Answer
    D non-effective due to particular design of the satellite Correct Answer Incorrect Answer

    Solution

    Earth attracts all bodies towards its centre. The acceleration produced in the body due to attraction force of earth on it is called the acceleration due to gravity. A astronaut in a satellite experiences weightlessness because two forces act on him: gravitational pull and centrifugal force which cancel out each other with the resultant force acting on him being zero.

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