I am having a hard time with this problem:(adsbygoogle = window.adsbygoogle || []).push({});

"A 9.00-kg hanging weight is connected by a string over a pulley to a 5.00-kg block that is sliding on a flat table. If the coefficient of kinetic friction is 0.200, find the tension in the string."

I started the problem by drawing two free-body diagrams, one for the weight and one for the block. By doing that, I was able to come up with my components:

Note: M1 = 5.00-kg

M2 = 9.00-kg

so when I am referring to "1," (such as Fx1) I am referring to the object with mass 5.00 kg.

Fx1 = -f + T = m(ax)

Fy1 = n - mg = 0

Fx2 = 0

Fy2 = T - mg = M(ay)

From here, I realized that n = mg and f = u(n). We know what u is (0.200) and we know what n is, so I plugged those values in.

f came out to be -9.8 N.

From this point, I am stuck. I tried solving for T in the second y component equation, and just ended up with T = 88.2 + 9ay

Any help on how to solve this problem is greatly appreciated. Thanks.

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# Homework Help: Pulley Problem

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