The forklift truck with center of mass at G1 has a weight of 3200 lb including the verti...

The forklift truck with center of mass at G1 has a weight of 3200 lb including the vertical mast. The fork and load have a combined weight of 1800 lb with center of mass at G₂. The roller guide at B is capable of supporting horizontal force only, whereas the connection at C, in addition to supporting horizontal force, also transmits the vertical elevating force. If the fork is given an upward acceleration which is sufficient to reduce the force under the rear wheels at A to zero, calculate the corresponding reaction at B.