question_answer 48)

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

Answer:

  (d) According to Newton's universal law of gravitation, force exerted by the one body to other body is equal in magnitude and given by and opposite in direction.