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Grade: 12
        a smal mass slides dwn an inclined plane of inclination 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??
9 years ago

Answers : (2)

AKASH GOYAL AskiitiansExpert-IITD
419 Points

Dear Student

See the pic for the solution


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9 years ago
vikas askiitian expert
509 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


9 years ago
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