a$(0\mathrm{.}9$m$,1$m$).$ The coordinate

of the elbow joint is $(1\mathrm{.}2$m$,0\mathrm{.}8$m$).$ The coordinate of the wrist joint is $(1\mathrm{.}4$m$,0\mathrm{.}9$m$).$ The coordinate of the center of dumbbell is $(1\mathrm{.}45$m$,0\mathrm{.}95$m$).$ The coordinate of

the tip of finger is $(1\mathrm{.}5$m$,1$m$).($g$=-9\mathrm{.}8($m$)/($s$^(2))).$ Keep $3$ decimal places.

$$

a$)$ What is the wrist flexion moment to maintain this posture? $(4$ points$)$

b$)$ What is the elbow flexion moment to maintain this posture? $(4$ points$)$

c$)$ What is the shoulder flexion moment to maintain this posture? $(4$ points$)$

d$)$ If the elbow flexion moment is purely generated by the biceps and the moment arm of the biceps about the elbow joint is $0\mathrm{.}06$ m$,$ what is the biceps muscle force to maintain this posture? $(6$ points$)$