Awheel of diameter 23.0 cm is constrained to rotate in the xy plane, about the z axis, which passes through its center. a force =( -31.0 + 40.0) n acts at a point on the edge of the wheel that lies exactly on the x axis at a particular instant. what is the magnitude of the torque about the rotation axis at this instant?

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.