A man shattered his jaw and lost all but two teeth. To make it work again, a surgeon had to move the joint downward and attach a muscle above it. If the new jaw is closed, 240 N is applied to each tooth. Earlier, we found that, in this new configuration, the tension in the muscle T is 2000 N and the reaction forces at C are Cx = 1200 N and Cy = 2080 N. Using these results, compute the normal and shear stresses in the jaw at R. Assume the cross-sectional area of the bone is 4 cm2