Problem F13-1 Dynamics Hibbeler 13th (Chapter 13)

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The motor winds in the cable with a constant acceleration, such that the 20-kg crate moves a distance s = 6 m in 3 s, starting from rest. Determine the tension developed in the cable. The coefficient of kinetic friction between the crate and the plane is mu_k = 0.3.
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its hard for me to follow if you fill in the variables at the end. It resolves in a long sentence of variables wich makes he dizzy in a kind of way, haha. maybe you can fill in the variables sooner. that way you dont get the T = m*ax+m*g*sin30+uk*mg*cos 30. I have to read it ten times to understand (13:37)

But above all, thanssk for the explanation :)

lesleymurugesu
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can someone help me out with the geometry on this problem. how is the amgle btwn W and Wy 30?

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