alleryA block of mass 2 kg slides down a rough incline of 30°. Coefficient of kinetic friction is 0.2. Acceleration of block (g = 10):
A3.27 m/s²
B5 m/s²
C1.73 m/s²
D2 m/s²
Answer & Solution
Correct answer: A. 3.27 m/s²
We have a = g(sin θ - μ cos θ).
That is a = 10(0.5 - 0.2 × √3/2).
That is a = 10(0.5 - 0.173).
So a = 3.27 m/s².
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