You truly are one crazy physics teacher Mr. Lewin. Hats off to you Sir. I wish I had a physics teacher in my post graduate department who would swing on a pendulum to teach us that time period of oscillation of a system is independent of its mass. 🥰
But here timeperiod will change because surface area where air touches the body is different so air friction to body come in play to have different time period
A pendulum is a wonderful example of how Gravity is not real. On a still pendulum when no other force is applied, the pedulum remains still. Its all about density, buoyancy and electromagnetism. Its all about the medium were in. Were denser than water, this we sink closer to the Earth (which is flat, stationary and enclosed.) Since boats are less dense than water they rise. Same applies for the rest of the world. Were denser than air. Thus we sink. And so on. :)
Het gaat er om dat: De hoeveelheid massa wat zich bevind aan het uiteinde van het pendulem, dus of het die sloopkogel is van 15 kilograms, of Walter lewin himself, geen verschil uitmaakt in het aantal slinger bewegingen.
