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Q5.3  Give the magnitude and direction of the net force acting on a stone of mass 0.1 kg,

 (d) lying on the floor of a train which is accelerating with 1 m s -2 , the stone being at rest relative to the train. Neglect air resistance throughout.

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As the stone is in contact with the train thus the acceleration of stone is the same as that of train i.e.  1 m/s2.

Thus force acting on the stone is given by :   

                                                              F\ =\ ma

or                                                                 =\ 0.1\times 1\ =\ 0.1\ N

This force is acting in the horizontal direction. 

Posted by

Devendra Khairwa

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