$36,$ find $R_{eq}$

Practice Problem $2\mathrm{.}9$

Figure $2\mathrm{.}36$

For Practice Prob. $2\mathrm{.}9.$

$7$

P$3.$

a$)$ Determine the unit vector along the $AB$ line.

b$)$ Calculate the moment of the force vec$(F)$ about point $B.$

c$)$ Calculate the moment of the force vec$(F)$ about the $AB$ line. $($Also write it in a Cartesian vector form!$)$

Note: In solving the problem, take vec$(F)$ shown in the figure as

Stud.$No$: #${?}_1$#${?}_2$#${?}_3$#${?}_4$#${?}_5$#${?}_6$#${?}_7$#${?}_8$#${?}_9$

vec$(F)=$#${?}_1$#${?}_2$#${?}_3$hat$(i)-$#${?}_4$#${?}_5$#${?}_6$hat$(j)+$#${?}_6$#${?}_8$#${?}_9$hat$(k)(N)$