Questions
Starting from rest, a body slides down a 450 inclined plane in twice the time, it takes to slide down the
same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is
detailed solution
Correct option is C
For smooth surface, a1=gsin45°,t1=tFor rough surface, a2=gsin45°-μgcos45°,t2=2t∴ s=12a1t12=12a2t22 ∵s=12at2⇒ gsin45°t2=gsin45°-μgcos45°(2t)2⇒ 1=(1-μ)4⇒μ=34=0.75Talk to our academic expert!
Similar Questions
Two blocks of mass M and m are connected with a string which passes over a smooth pulley as shown in fig. The mass M is placed on a rough
inclined plane. The coefficient of friction between the block and the inclined plane is µ. What should be the minimum mass m so that the block M slides upward ?
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