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1. The mass of the moon is about 0.012 times that of the earth and its diameter is about 0.25 times that of earth. The value of G on the moon will be:
a) In Same as that on the earth
b) About one-fifth of that on the earth
c) About one-sixth of that on the earth
d) About one-fourth of that on the earth
2. An apple falls from a tree because of the gravitational attraction between the earth and the apple. If F1 is the magnitude of the force exerted by the earth on the apple and F 2 is the magnitude of the force exerted by the apple on the earth, then
a) F1 is very much greater than F2
b) F2 is very much greater than F1c) F1 and F2 are equal
d) F1 is only a little greater than F2
1)
same as that on the earth
G is universal gravitational constant. It is equal across whole universe.
2)
Both are equal
According to Newton's third law "Every action has an equal and an opposite reaction". An apple falling down has the force of gravity acting downward, which is the action. The opposite reaction is the force the apple exerts on the earth.
Updated on: 10-Oct-2022
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