BPK 142 Lecture Notes - Lecture 6: Kilogram-Force, Ion, Dynamic Equilibrium

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 142
• Professor: Mike Walsh

Document Summary

Qualitative analysis - a non-numerical description of a movement based on direct observation. Quantitative analysis - a movement is analyzed numerically based on measurements from data collected during the performance of the movement. Mass the quantity of matter contained in an object. Weight the amount of gravitational force exerted on a body. Weight = mass x acceleration of gravity = mag. If a person has a mass of 80 kg, his weight = (80 kg) (9. 81 m/s2) = 785 n. The moon has 1/6 the gravity of earth so the above person would weigh 131 n. same mass, different weight. We sometimes use a force unit of convenience called a kilopond (kp). A kilopond is equal to 9. 81 n, hence if you have a mass of 80 kg, you weigh 80 kp. Torque the product of force and the perpendicular dista(cid:374)(cid:272)e fro(cid:373) the for(cid:272)e"s li(cid:374)e of action to the axis of rotation. It may be thought of as rotary force.