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sindhuja P Grade: 11
        

Two blocks of masses 2Kg & 1Kg are tied to a string which passess over a light pulley.Initially the masses are held at rest on the same horizontal line.Find the distance travelled by centre of mass in 2 sec__________

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear sindhuja p


acceleration of masses is given by a=(m2-m1)g/(m2+m1)


                                                   =g/3


1 kg moves in upword direction  =1/2 a t2


                                              =1/2 *g/3 *4


                                               =2g/3


2kg moves in downward direction =1/2 a t2


                                                =2g/3


Now center of mass ={1*2g/3  +2*(-2g/3)}/(1+2)


                            =-2g/9


 so  center of mass 2g/9 m in downward direction





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Badiuddin

7 years ago
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