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OCEAN GODRE Grade: 12
        a smal mass slides dwn an inclined plane of inclination @.th coef of friction varies as k=k1x.whr x is th distance through wch block slides down.then the distance covered by mass before it stops is??
6 years ago

Answers : (2)

AKASH GOYAL AskiitiansExpert-IITD
419 Points
										

Dear Student


See the pic for the solution


 


All the best.                                                           


AKASH GOYAL


AskiitiansExpert-IITD


 


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428_23499_Photo-0157.jpg

6 years ago
vikas askiitian expert
510 Points
										

net force on the mass = mgsin@ - friction force


                           ma = mgsin@ - kmgcos@


                             a = g(sin@-kcos@)      or


                                =g(sin@-k1xcos@)       .........1


                     a = dv/dt


                    adx = dv(dx/dt)


                    adx = vdv          .................2


from 1 & 2


            g(sin@-k1xcos@)dx = vdv


           g(sin@x - k1cos@(x2/2)) = 0          


               x = 2tan@/k1


 

6 years ago
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