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Q5.3 Give the magnitude and direction of the net force acting on a stone of mass 0.1 kg, (c) just after it is dropped from the window of a train accelerating with  1 ms^{-2}, Neglect air resistance throughout.

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Just after the stone is dropped, the stone is free from the acceleration of the train. Thus the force acting on the stone will be just the gravitational force which acts in the downward direction.

The gravitational force is given by:- 

                                                        F\ =\ mg

or                                                            =\ (0.1)10

or                                                             =\ 1\ N  

Posted by

Devendra Khairwa

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