PHYSICS 1L03 Lecture Notes - Friction, Shoulder Joint, The Crate
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5- torque and equilibrium: a 1-kg rock is suspended by a massless string from the left end of a 1. 0 m measuring stick. The force acts at the edge of the platform and is directed at 30o to the outward radial direction. The applied torque is: 10 nm, 8. 7 nm, 5 nm, 2. 5 nm, 0, a 1. 73 kg trophy is held at arm s length, 63. 7 cm from the shoulder joint. Assume the weight of the rod is negligible. At what point should the rod be picked up that it stays at equilibrium, without rotating (where is the balance point of this rod?) Two downward forces of magnitude 50 n and 200 n are exerted on the left and right end of the rod respectively. The mass of seesaw is m = 76 kg. Find the net torque acting on the board about the pivot point. , (cid:87)p and about the opposite corner, point a, (cid:87)a.