Diagram of the flexed arm showing the line of action of the gravitational force and the perpendicular distance from the pivot to the line of action. Image adapted from Openstax University Physics. ally, we can calculate the torque by multiplying the size of the force by the length of the lever arm (F that's it, you get the torque. In symbol form it looks like this: torque = T = Fdl Reinforcement Activity Enter your values in the boxes, using just two significant figures. If you hold your 2.3 ft long arm out horizontally with a 12 lb weight in your hand, what is the torque about your shoulder joint caused by the weight? ft.lbs After you have an answer, convert from ft.Ibs to N.m to by using conversion factors between Newtons and pounds and feet and meters. N.m. Check Reuse Embed TATIC EQUILIBRIUM or an object to be in static equilibrium both the equilibrium conditions must be met. Writing these onditions on the torque and force in symbol form we have: Tnet = 0 AND Fnet = 0 BICEP TENSION Previous: Brittle Bones