Classify each of the following trusses as internally or exte

Classify each of the following trusses as internally or externally statically determinate, indeterminate (include degree), or unslable.

Solution

1) This is externally determinate. As number of reaction are less are equal to number of equilibrium equations.

This is internally determinate m<2j. 9<12.

This is unsatble as number of memebers are less than 2*joints.

2) This is externally determinate. As number of reaction are less are equal to number of equilibrium equations.

This is internally determinate m<2j. 11<12.

This is unsatble as number of memebers are less than 2*joints.