In the figure shown below the friction between the 4 kg block and the incline as µ 1 and between 8 kg and incline is µ 2 . (take g = 10 m/s 2 )
(i) If µ 1 = 0.2 and µ 2 = 0.3 then find acceleration of m 1 and m 2 ?
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Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(i) μ 2 > μ 1 therefore both will more together
and a = 
= g sin θ – 
cos θ
(= 2.7 m/s 2 ) for both
(ii) μ 2 < μ 1 therefore a 2 > a 1
a 2 = g sin θ – μ 2 g cos θ
= 10 × 
– 0.2×10 × 
= 3.2 m/sec 2
a 1 = g sin θ – μ 1 g cos θ = 5 – 1.5 
= 2.4 m/sec 2
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