Track IV · 55 min

Momentum & rotation

Collisions, impulse, torque, and the statics that keep a structure from rotating into failure.

1. 1Momentum and collisionsBenchWhen forces are brief and ugly, integrate them. The integral is impulse; the leftover is momentum.16 min
2. 2Torque and equilibriumBenchForces want to translate. Torques want to rotate. Statics is both sums sitting at zero.16 min
3. 3Rotation of rigid bodiesMass is not enough. Where the mass sits decides how hard a shaft is to spin.14 min