Determine the moment at point C in the cantilever beam. Given w0=3 N/M, L=3 m. (use the convention of clockwise to be negative and counterclockwise as positive)

An investigator needs a uniform 30 mt field, which she intends to produce with a solenoid. she takes a long 10-cm-diameter tube and wraps wire along the length of it, wrapping 1200 turns of wire along a 75-cm length of the tube. how much current must she pass through the wire to produce the desired field?