In the shown figure m_A, m_B and m_C are the masses of the three blocks, the incline is frictionless m_A=5 ~kg , m_B=10 ~kg , m_C=2 ~kg . coefficient of friction between A and B is 0.5 and between B and C is 0.1 . The frictional force on bl

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In the shown figure m_A, m_B and m_C are the masses of the three blocks, the incline is frictionless m_A=5 ~kg , m_B=10 ~kg , m_C=2 ~kg . coefficient of friction between A and B is 0.5 and between B and C is 0.1 . The frictional force on block A is 6 K Newton. Find the value of K. (Take g =10 ~m / s ^2 )

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Correct answer: 5

aligned & m_ A g =5 10 37^ =5 10 3 5 =30 ~N & f_ = _ A B (m_c+m_B ) g =48 ~N & hence f=30 ~N aligned

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