Questions
The upper half of an inclined plane with inclination is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom, if coefficient of friction for the lower half is given by:
detailed solution
Correct option is A
Let speed of body at point B be v thenv2=2(gsinϕ)land v2=−2(gsinϕ−μgcosϕ)l⇒2sinϕ=μcosϕ⇒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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