Vector is defined as $F=11\mathrm{.}785i+11\mathrm{.}785j-47\mathrm{.}140kN$ and is applied at

Point D$.$ Using the coordinate system shown:

a$)$ Write the unit vector in the direction of line AC$.$

b$)$ Write the direction vector $r_{AD}.$

c$)$ Using the above, determine the moment of $F$ about line $AC.$

d$)$ Explain how your answer to part c would be different if taking the moment about

line CA rather than line AC$.$

e$)$ Explain how your answer to part c would be different if using direction vector rCD

rather than $r_{AD}.$

For parts $d$ and $e,$ no calculations are required.

Pector is defined as $F=11\mathrm{.}785i+11\mathrm{.}785j-47\mathrm{.}140kN$ and is applied at

Point D$.$ Using the coordinate system shown:

a$)$ Write the unit vector in the direction of line AC$.$

b$)$ Write the direction vector $r_{AD}.$

c$)$ Using the above, determine the moment of $F$ about line $AC.$

d$)$ Explain how your answer to part c would be different if taking the moment about

line CA rather than line AC$.$

e$)$ Explain how your answer to part c would be different if using direction vector rCD

rather than $r_{AD}.$

For parts $d$ and $e,$ no calculations are required.

Pector is defined as $F=11\mathrm{.}785i+11\mathrm{.}785j-47\mathrm{.}140kN$ and is applied at

Point D$.$ Using the coordinate system shown:

a$)$ Write the unit vector in the direction of line AC$.$

b$)$ Write the direction vector $r_{AD}.$

c$)$ Using the above, determine the moment of $F$ about line $AC.$

d$)$ Explain how your answer to part c would be different if taking the moment about

line CA rather than line AC$.$

e$)$ Explain how your answer to part c would be different if using direction vector rCD

rather than $r_{AD}.$

For parts $d$ and $e,$ no calculations are required.