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Static equilibrium, tension and compression

  • Thread starter Dietrichw
  • Start date
22
0
1. Homework Statement
The figure below shows a light truss formed from three struts lying in a plane and joined by three smooth hinge pins at their ends. The truss supports a downward force of
Farrowbold.gif
= 1 330 N applied at the point B. The truss has negligible weight. The piers at A and C are smooth.

The beams make a triangular bridge over a gap without friction at the joints or contact points to simplify it

For part A the Theta on the left is 29.5 and the right is 44.0, Find the contact forces on each side of the gap. I've done this.
The contact force on the left side is 491N
Right side is 839

For part B it asks for the tension or compression of the three beams.


2. Homework Equations
Net torque for part A and using h/tan(theta) for the lever arms since lengths were not given



3. The Attempt at a Solution

I've tried looking at the vector component that is in line with the right side and that does not work. I tried the same with adding the part of the contact force that acts on the right beam. I though about net force but there aren't any in the x direction
 

Answers and Replies

SteamKing
Staff Emeritus
Science Advisor
Homework Helper
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No figure was attached. :frown:
 
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