Question

An apple of mass 100 g falls from a tree because of gravitational attraction between the earth and the apple. If the magnitude of force exerted by the earth on the apple be F1 and the magnitude for force exerted by the apple on the earth be F2, then (a) F1 is very much greater than F2
(b) F2 is very much greater than F1
(c) F1 is only a little grater than F2
(d) F1 and F2 are exactly equal

Answer 1

Answer:

The force of attraction f is equal to f₂ , option (d)

Explanation :

The gravitational force of attraction is given by

F =

Let the mass of the earth = M

mass of apple = m

distance between them = r

Force exerted by earth on the apple,

f =

similarly force exerted by apple on earth

f₂ =

so we can see that f is equal to f₂ , option (d)

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