So fustrated and need some desperate help

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The user is struggling with a physics problem, specifically parts c and d. They attempted calculations but found their answers incorrect. A response suggests that for part c, they need to multiply by the distance and consider that the work done by friction is negative. Additionally, it emphasizes that since the crate moves at constant velocity, the net work done by all forces should be analyzed according to the work-energy theorem. Understanding these concepts is crucial for solving the problem correctly.
HighVoltage
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all,
i am stuck on this problem. physics has not been good to me this semester. its like "in one ear out the other"

this is the problem:
Untitled-1.jpg


i can't get c or d.

for c i tried .25(29*9.8+117.37*sine(40)) that wasnt right

for d i tried 117.37*4.1 and that wasnt right

please help me.
 
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For part c), you forgot to multiply by the distance... also the work by friction is negative...

Think about this... the crate is moved at constant velocity... so what is the net work done on it by all forces? (what does the work energy theorem say?)
 

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