A small particle slides along a track with elevated ends and a flat central part, as shown in figure. The flat part has a length 3m. the curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is µ = 0.2. The particle is released at point A, which is at a height h = 1.5 m above the flat part of the track. The position where the particle finally come to rest is:
Text Solution
Verified by ExpertsThe correct answer is:
C
W G – W f = 0, mgh = μ mg λ
h = μ λ
h = (0.2) λ ⇒ λ = 
λ = 7.5 m = (3 + 3 + 1.5) m
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