Section: Trusses $(22$ Points$)$

$10.$ A truss and applied loading are shown in Figure $7$ below. The truss is supported by a roller at point A and a pin at point C $.$ What is the horizontal reaction at point C $?$

a$.,13\mathrm{.}3kN($acting to the left$)$

b$.20$ kN $($acting to the right$)$

c$.0$ kN

d$.33\mathrm{.}3$ kN $($acting to the right$)$

$11.$ Consider the truss and applied loading in Figure $7.$ What is the force in member $AB?$

a$.,10kN($compression$)$

b$.0$ kN $($zero force member$)$

c$.20$ kN $($compression$)$

d$.10$ kN $($tension$)$

$12.$ Consider the truss and applied loading in Figure $7.$ What is the force in member BD$?$

a$.10$ kN $($compression$)$

b$.0$ kN $($zero force member$)$

c$.20$ kN $($compression$)$

d$.10$ kN $($tension$)$