KINE 3030 Lecture : Torque and Mechanical Action of Muscles Clear and concise notes taken during lecture. (Received an A)

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 3030
• Professor: William Gage

Document Summary

Remember: torque is the rotational effect created by an applied force; it is the product of force and the perpendicular distance of the moment arm to the axis of rotation. Very rarely do muscles insert at 90 degrees (really the only exception being the biceps) In order to show joint torque you must isolate a system on one side of the joint (look at only the forearm: remember newton"s 3rd law: only external forces. In a lever, there is two moment arms (one associated with the force and one with the resistance) If the mechanical advantage is greater than 1 then you don"t need to exert more force than the resistance to move it (1st and 2nd)