S

The bar illustrated below has a cross section with a constant with $EA=1200kN.a=2m,b=5m,c=2m.$ The load, $w=9k\frac{N}{m}$ and the stiffness of the spring on the right hand side is $k=1100k\frac{N}{m}.$

w

A

Analyse the bar using the flexibility method by introducing a cut$/$release at A and find

The overlap at A $($D$1)($m$,$ internal sense$)$:

Multiple Choice Answer: $($type in your multiple choice answer, e$.$g$.$ a$,$ b$,$ c or d$)$

a$.0\mathrm{.}2864$

b$.0\mathrm{.}3075$

c$.0\mathrm{.}0687$

d$.0\mathrm{.}1688$

The redundant force pair at the release $($use internal convention$)($ kN $,$ internal sense$)$:

Multiple Choice Answer: $($type in your multiple choice answer, e$.$g$.$ a$,$ b$,$ c or d$)$

a$.-30\mathrm{.}4895$

b$.-29\mathrm{.}7423$

c$.-20\mathrm{.}0676$

d$.-33\mathrm{.}9535$

Analyse the bar using the stiffness method, by including a lock at $A,$ and find:

The locking force at $A($ kN $,$ positive right$)$:

Multiple Choice Answer: $($type in your multiple choice answer, e$.$g$.$ a$,$ b$,$ c or d$)$

a$.-7\mathrm{.}1434$

b$.-43\mathrm{.}6009$

c$.-37\mathrm{.}9132$

d$.-22\mathrm{.}5$

The displacement of point A due to the reverse of the locking force $(m,$ in positive right$)$:

Multiple Choice Answer: $($type in your multiple choice answer, e$.$g$.$ a$,$ b$,$ c or d$)$

a$.0\mathrm{.}0328$

b$.0\mathrm{.}0057$

c$.0\mathrm{.}0119$

d$.0\mathrm{.}0182$