A cubic block of mass m is sliding down on an inclined plane at 60 with an acceleration of g2, the value of coefficient of kinetic friction is
(4) 3 - 1
Along the incline (block sliding down):
ma = mg - k mg
⇒ g2 = g 60 - k g 60
⇒ 12 = 32 - k2
⇒ k = 3 - 1
Answer: (4)
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