Question

A beam fixed at the ends and subjected to lateral loads only is statically indeterminate and the degree of indeterminacy is

• A. One
• B. Three
• C. Four
• D. Two

Answer 1

The correct option is D Two


Total no. of reactions (r) = 2 + 2 = 4
Total no.of equilibrium equation (e) = 2
$\therefore$ Degree of static indeterminacy = r - e = 2

For beams total degree of static indeterminacy = external indeterminancy.