Consider a uniform ladder of length 2.2 m and mass 39 kg. The ladder is falling over, pivoting about the end that is touching the ground. Someone is pushing on

the top end of the ladder with a horizontal force of size 257 N. At the instant when the ladder makes a 43 degree angle with the horizontal, calculate the net torque on the ladder about its bottom end, in N m. Make your answer positive, and use g = 10 m/s2.