CBSE-XI-Physics

11: Gravitation

with Solutions - page 2
Qstn# ii-3 Prvs-QstnNext-Qstn
  • #3
    Suppose, the acceleration due to gravity at the earth’s surface is 10 m s-2 and at the surface of Mars it is 4⋅0 m s-2. A 60 kg passenger goes from the earth to the Mars in a spaceship moving with a constant velocity. Neglect all other objects in the sky. Which part of figure (11-Q1) best represents the weight (net gravitational force) of the passenger as a function of time?
    (a) A
    (b) B
    (c) C
    (d) D.
    Figure
    digAnsr:   c
    Ans : (c) C
    At one point between the Earth and Mars, the gravitational field intensity is zero. So, at that point, the weight of the passenger is zero. The curve C indicates that the weight of the passenger is zero at a point between the Earth and Mars.
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