If the tension in the string in figure is 16 N and the acceleration of each block is 0.5ms-2 , find the friction coefficients at the two contacts with the blocks.

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μ1=0.75,μ2=0.06

μ1=0.06,μ2=0.75

μ1=0.85,μ2=0.04

μ1=0.85,μ2=0.002

answer is A.

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Detailed Solution

m1=2kg and m2=4kgT−μ1m1g=ma⇒μ1=1519.6=0.75m2gsin⁡θ−μ2m2gcos⁡θ−T=m2a⇒μ2=117.32=0.06

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