A 2 kg mass starts from rest on an inclined smooth surface with inclination 30° and length 2 m. How much will it travel before coming to rest on a frictional surface with frictional coefficient of 0.25?
Options
(a) 4 m
(b) 6 m
(c) 8 m
(d) 2 m
Correct Answer:
4 m
Explanation:
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v2=u2+2gsin30
v=root20
S=v2/2(mu)g
S=20/2*0.25*10
S=4m