Kinesiology 3341A/B Lecture Notes - Lecture 7: Angular Velocity, Angular Acceleration, Hydrostatic Weighing

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 3341A/B
• Professor: Jim Dickey

Document Summary

Mass is inertia in sense it is resistance and acts for linear acceleration. How the masses is distributed rather than the actual mass. Further from com the harder to rotate. Consider any body as a bunch of particles. Could have mass of every particle and the distance of that particle. Break up object into bunch of slices. For each slice com and some radius. Then just add the mass x r (squared) Use with people as well: take segment and consider it as a bunch of slices and the imaging of cat scans can generate that data. Incremental hydrostatic weighing: figure out volume and get density of each segment. Applying moment with hand, bringing mass close to pivot you reduce moment of inertia. Which will get to bottom first: different inertia. Green all mass with big radius large moi. Blue mass on centre line, radius of 0 not contributing to moi.