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**Susan's 13.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30 degrees above the floor. The tension is a constant 30.0 N and the coefficient of friction is 0.180.**

Use work and energy to find Paul's speed after being pulled 2.60 m

Use work and energy to find Paul's speed after being pulled 2.60 m

So far I found the forces acting on the system to be:

Y:

127.5N down due to gravity

15N up due to tension

112.5N normal force

X:

25.98 due to tension

-20.25 due to friction

So I get a net force of 5.73N which I thought if I divided by the mass of 13kg it would give me that speed, but that is wrong. I am stuck here guys.

Thanks in advance for the help