A $76-$kg man stands on his toes by exerting an upward force through the Achilles tendon, as shown below. What is the force in pounds in the Achilles tendon if he stands on one foot? Assume the perpendicular distance between the center of gravity of the person and the contact point between the foot and the ground is $12.5$ cm$,$ and the perpendicular distance from the center of gravity and the attachment point of the Achilles tendon is $4\mathrm{.}$9 cm$.$