question_answer 42)

  Two particles are placed at some distance. If the mass of each of the two particle is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be (a)times                          (b) 4 times                          (c)  times                       (d) unchanged

Answer:

  (b) We know that, according to gravitational force where,   F = Force between Two moss M = First moss m = Second mass G = Gravitational Constart r = Distant between Two mass According to the question, F ? = New force when mass is doubled If mass of each particle is doubled i.e.,                       M = 2 M and m = 2 m These value put in Eq, (i), we get                                                            From Eq, (i),