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g) With different loading applied a free body diagram at joint C looks like th...

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g) With different loading applied a free body diagram at joint C looks like the following;

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Image failed to load: prob3

 The 20 kN and 15 kN forces represent the reaction forces at the support at C.  A method of Joints at other joints reveals forces FBC = -10 kN (compression)  and  FCF= 6 kN (tension). 

Calculate the value of the force FCH  in  kN[2 marks]

Assume the same angles between all members as previously.

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