A body is moving down an inclined plane of slope 370. The coefficient of friction between the body and plane varies as μ = O.3x, where x is the distance travelled down the plane by the body. The body willhave maximum speed (Take, g = 10 ms-2, sin370 = 35)
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a
at x = 1.16m
b
at x = 2m
c
at bottom of plane
d
at x = 2.5m
answer is D.
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Detailed Solution
Body will have maximum speed, wheremgsinθ=μmgcosθor sin 370 = (0.3x) cos 370 or x = 2.5 m