the cantilevered jib crane is used to support the load of 740 lb. if the trolley t can be placed anywhere between 1.5ft≤x≤7.5ft, determine the maximum magnitude of reaction at the supports b. note that the supports are collars that allow the crane to rotate freely about the vertical axis. the collar at b supports a force in the vertical direction, whereas the one at a does not. the maximum magnitude of reaction at the supports (in lb).
