Causes of centripetal acceleration, and demonstration of straight path motion after loss of centripetal force.

Reasoning showing why centrifuges work, with demonstration of lettuce in a collander.

Explanation of how small particles sink to side in a centrifuge; demo of centrifuging AgCl.

Demonstration of water in a spinning bucket feeling artificial gravity upwards.

Example and demonstration of a ball in a looping rollercoaster; proof that h≥2.5R for ball to make it around.

Demonstration of weight placed on ladder near critical angle at various positions.

Statics of a hanging object; position of center of mass for equilibrium; demonstrating the stability of several small objects.

Discussion of stability of rope walker with objects suspended to lower center of mass; brief demonstration of rope walker on zip line.

Demonstration of failure of simple harmonic motion for ball in circular well; calculation of T does not agree with SHM.

Demo of converting rotational KE to linear KE from car flywheel; rotational KE of Sun, Earth and potential for use.

Proof that acceleration is independent of M, R; acceleration for various geometries, with demonstration.

Angular momentum conservation calculation and demonstration for spinning person, with arms outstretched and pulled in.

Speed of center of mass and angular velocity of rod after impulse at non-CM point, using two different origins; demonstration of this motion.

Demonstration of blue plastic spinner that stops and spins in the opposite direction, apparently violating laws of physics.