A5/8-in.-diameter steel rod ab is fitted to a round hole near end c of the wooden member cd. the ultimate strength of the wood used is 8 ksi in tension and 1 ksi in shear, while the ultimate shear strength of the steel is 22 ksi. determine (a) the factor of safety for the pin, (b) the average bearing stress in the wood, (c) the required value of b if the factor of safety for the wooden member in shear is 3.0, (d) the maximum average normal stress in the wood.