Ameterstick of negligible mass is placed on a fulcrum at the 0.4 m mark, with a 1 kg mass hung at the zero mark and a 0.5 kg mass hung at the 1.0 m mark. the meterstick is held horizontal and released. immediately after release, the magnitude of the net torque on the meterstick about the fulcrum is most nearly (a) 1 n middot m (b) 2 n middot m. (c) 2.5 n middot m. (d) 7 n middot m (e) 7.5 n squareroot m