How Do I Correctly Draw This Free Body Diagram?

AI Thread Summary
The discussion focuses on the challenges of drawing a free body diagram for a physics problem. Key points include the importance of representing weight as a downward force and the normal force as perpendicular to the contact surface. The user attempts to apply equations involving forces, friction, and angles but encounters difficulties leading to incorrect answers. Clarifications on the correct application of these forces are sought to aid in solving the problem. Accurate free body diagrams are essential for understanding the forces at play in physics problems.
muna580
I am trying to solve this problem but I am having a hard time drawing a free body diagram. Can someone please help me draw one so I can solve the problem

http://img141.imageshack.us/img141/1662/untitled1pc1.jpg
 
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muna580 said:
I am trying to solve this problem but I am having a hard time drawing a free body diagram. Can someone please help me draw one so I can solve the problem

http://img141.imageshack.us/img141/1662/untitled1pc1.jpg
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Remember that weight (a force) always points straight down, and that the normal force is perpendicular to the surface the object makes contact with. Once you have these forces figured out, the rest is given in the question.
 
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Is this correct?

http://img133.imageshack.us/img133/6712/untitled1at2.jpg

Fcosθ = N

f = μN
f = μFcosθ

Fsinθ = mg + μFcosθ

Using that equation above Fsinθ = mg + μFcosθ, I tried to solve of F and then use Fdcosθ to get the work, I got the answer wrong.
 
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