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...Phys general physics i course lecture notes section x dr donald g luttermoser east tennessee state university edition abstract these class are designed for use of the instructor and students taught by at make reference to college th textbook serway vuille rotational equilibrium dynamics a torque ability force rotate body about some axis is mea sured quantity called greek letter tau due f has magnitude d n m ii applied iii lever arm also moment dis tance b thelever armisthe distancefromtheaxisofrotation line drawn along direction note that r sin where displacement from point angle between c as result we can rewrite equation eq rf actually vector which points in perpendicular plane dened vectors here will just work with treat it scalar y net found summing all torques e multiple forces acting on rotating object positive if rotation counterclockwise ccw negative clockwise cw...