A hydraulic jack can be used to raise point B of the cantilever beam ABC. The beam was ori...

A hydraulic jack can be used to raise point B of the cantilever beam ABC. The beam was originally straight, horizontal, and unloaded. A 20-kN load was then applied at point C, causing this point to move down. Determine (a) how much point B should be raised to return point C to its original position, (b) the final value of the reaction at B. Use E = 200 GPa.