A machine uses a force of 200 newtons to do 20,000 joules of work in 20 seconds. Find the distance the object moved and the powe
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(Missing figure is here: https://www.physicsforums.com/attachments/ch05-p070-jpg.149243/ )
Let's call
and 
the masses of the two blocks. We can write Newton's second law for both blocks (sum of all forces acting on the block = ma). On block 1, we have two forces: the weight 
pointing downwards and the tension of the string T poiting upwards. On block 2, we have the tension of the string going right and the friction 
going left. Therefore
Summing the two equations, we find
and then using
we can find the acceleration:
Let's call
Summing the two equations, we find
and then using