a$)$ Define the terms "Statically determinate structure" and

"Statically indeterminate structure".

b$)$ How do you determine the number of degrees of indeterminacy

of a beam? Determine the number of degrees of indeterminacy

for the given beam shown in Figure $3.$

c$)$ Consider a $12m$ long propped cantilever beam as shown in

Figure $3.$ Assuming that El is constant, by using the force

method, determine the reactions at A and $C,$ and draw the

bending and shear force diagrams for this beam. You may

consider selecting the vertical reaction at $A$ to be redundant to

determine the reaction at $A,$ and reaction moment at $C$ to be

redundant to determine the reaction of $C.($You may need to

refer to the appendices$)$

Figure $3$: A propped cantilever beam with $12m$ span.