$(10\%)$ Problem $10$: In the figure, the center of gravity $($CG$)$ of the pole held by the pole vaulter is $1\mathrm{.}8m$ from the left hand, and the hands are $0\mathrm{.}705m$ apart. The mass of the pole is $5\mathrm{.}0kg.$

$50\%$ Part $($a$)$ Calculate the magnitude of the force, in newtons, exerted by his right hand.

$50\%$ Part $($b$)$ Calculate the magnitude of the force, in newtons, exerted by his left hand.