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I can't seem to get the right answer for this problem please help! The system shown...

I can't seem to get the right answer for this problem please help!

The system shown can undergo vertical motion only the springs are unstretched when ?a=?b=0. Determine ?a,?b and the force supported by each spring if Ma=50kg, Mb=80kg, K1=100N/mm, K2=120N/mm, K3= 140N/mm.

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Draw the free body diagram of mass A k,S Write the force equilibrium equati on in the vertical directiorn 1008,-(50) (9.81)-1

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