Jane carries a heavy object in two different body positions. If the weight of the object $($ Fp $)$ is $200$ N $,$ and the weight of her upper body $($ Fw $)$ is $450$ N $.$

In scenario A$,$ she has an upright posture.

Moment arm:

$Lw=0\mathrm{.}02m$

$Lp=0\mathrm{.}4m$

In scenario B$,$ she leans forward.

Moment arm:

$Lw=0\mathrm{.}25m$

$Lp=0\mathrm{.}5m$

Calculate the total torque generated by Fw and Fp about the lumbosacral joint in these two scenarios. $(5$ points$)$

B