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Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 4.00 kg and m2 = 8.00 kg, what value of f will reduce the acceleration of the system by 50%?

Now I got the equations for these two as

for M1= T-4g= 4a

for M2= 8g-T= 8a

I got a as 3.266

I got T as 52.264

But I cant get the answer to the asked question. Please HELP me solve this.

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# Homework Help: Force- Major Help needed

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