Statics Questions involving finding forces

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The discussion focuses on solving statics problems involving forces and free body diagrams (FBD). Participants express difficulty in visualizing forces, particularly in determining the force at point B and its relationship to the spring's vertical force. The importance of understanding the direction of forces, especially the perpendicular force at the roller's contact point, is emphasized. The use of trigonometric equations to resolve forces into components is mentioned as a necessary approach. Overall, the conversation highlights the challenges of applying theoretical concepts to practical problems in statics.
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Homework Statement



http://ft.trillian.im/b0f9eae6eee2cb82091d0bd460ed09948b0cf819/6bh6EcByYLCp8YJWVJ5pqqnrqKcIY.jpg

Homework Equations



Fx= Fcos(theta)
Fy=Fsin(theta)



The Attempt at a Solution



Starting with number one, I can't understand how to find the force given by that contact by B. The vertical force on the spring can be found by the given constant and distance of course.

I can't even see the forces on the other 2. So hard to visualize a FBD >.<
 
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Hi Kalookakoo! :smile:
Kalookakoo said:
Starting with number one, I can't understand how to find the force given by that contact by B.

The force between the roller and that thing at the bottom must be perpendicular to the surface (so through the centre, B, of the roller) …

so, doing a free body diagram for the roller on its own, the direction of the force at B must be … ? :wink:
 

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