(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The two blocks are connected by a heavy uniform rope with a mass of 4.00kg. An upward force of 200N is applied as shown.

a.) What is the acceleration of the system?

b.) What is the tension at the top of the heavy rope?

c.) What is the tension at the midpoint of the rope?

The right is my own drawing of FBD and the sketch on the left side is from the book

2. Relevant equations

[tex] w = mg[/tex]

[tex] F = ma[/tex]

3. The attempt at a solution

b.)Acceleration of the system:

[tex] \sum{F_{net}} = F + (-W_{m1}) + (-W_{rope}) + (-W_{m2})[/tex]

Fnet = 200N - (6.00kg)(9.80m/s^2) - 4.00kg(9.80m/s^2) - (5.00kg)(9.80m/s^2)

Fnet = 53.0N

m_total = 4 + 5 + 6

m_total = 15kg

a = (Fnet)/(mtotal)

a = 53N / 15kg

a = 3.53m/s^2

b.) tension at the top of the heavy rope?

i dont know why the answer is 120N

c.) midpoint of rope,....

same here 93.3N

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# Homework Help: Newton's Law and a rope

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