Questions
The upper half of an incline plane with inclination is perfectly smooth while the lower half is rough. A body starting from rest at top will again come to rest at the bottom if the coefficient of friction for the lower half is given by
detailed solution
Correct option is A
For upper half, we havev2=(0)2+(2gsinϕ)lFor lower half 0=v2+2g(sinϕ−μcosϕ)l or 2gsinϕ.l+2gsinϕl=μ2gcosϕl μ=2tanϕTalk 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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