As shown in the figure below, a 17- by 250-mm rectangular steel bar is cantilevered to 305 x 89vertical steel channel (see Table A-7) using 3 tightly fitted M 20 x 2.5, ISO grade 5.8 bolts located at the positions shown in the table(1). A force F is applied at the tip of the cantilever steel bar.The channel and the steel bar are made of 1018 cold-drawn steel. For a design factor of 2.0, find the safe force F that can be applied to the cantilever for the following failure modes a) bearing on bolt, b) bearing in channel, c) bearing in cantilever and d) bending of cantilever. All dimensions in millimeters