time taken to slide on a frictionless surface=square root of 2s/gsin@ s is the distance travelled time taken to slide on a surface which has friction is square root of 2s/g(sin@-ukcos@) where @ is the angle of inclined surface uk is the coefficient of kinetic friction i.e square root of 2s/g(sin@-ukcos@)=2 square root of 2s/gsin@- 2s/g(sin@-ukcos@)=4* 2s/gsin@ sin@-ukcos@/sin@=1/4 1-ukcot@=1/4 ukcot@=3/4 uk=3/4*tan35 @ is the angle of inclined surface=35 degrees
krishna wants to crack cat,gate,ias,ph.d.nobody can stop him from doing it
Moderation Team
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