https://physlab-wiki.com/ 2026-04-18T22:00:35+00:00 https://physlab-wiki.com/ https://physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2024-10-09T12:05:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/mechanics/motion_in_two_dimensions/conical_pendulum?rev=1728489940&do=diff ---------- A weight suspended by a string is swung around by a variable speed motor. The angle made by the weighted string to the vertical increases with the rate of rotation. Notes This sort of driven conical pendulum is actually rather complicated. The paper below details a similar system as a way of understanding a spinning chain. text/html 2023-09-11T15:19:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/mechanics/motion_in_two_dimensions/parabolic_trajectory_of_a_water_jet?rev=1694459984&do=diff ---------- A water jet is emitted from a horizontal nozzle. A series of weighted, evenly-spaced strings hangs from a horizontal rod which is mounted at the same height as the nozzle. The arc of the water jet follows the curve described by the ends of the strings and, by measuring the length of the strings, is shown to be a parabola. text/html 2024-10-14T11:40:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/mechanics/motion_in_two_dimensions/shoot_the_monkey?rev=1728920446&do=diff ---------- A slow-moving projectile aimed at a suspended target is fired at the same time that the target is released and allowed to free-fall. The projectile hits the target since, despite its horizontal velocity, it falls at the same accelerated rate as the target. text/html 2024-10-04T10:51:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/mechanics/motion_in_two_dimensions/simultaneous_fall?rev=1728053471&do=diff ---------- Two steel balls are loaded onto a spring-loaded actuator which, when released, causes one of the balls to fall straight down and the other to fall with a noticeable horizontal velocity. The fact that they land simultaneously on the table or floor is made evident as the sounds of their respective impacts are heard in unison. text/html 2024-11-01T14:50:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/mechanics/motion_in_two_dimensions/spinning_block?rev=1730487045&do=diff ---------- A wooden block is hit off-center with a mallet. Two dry-erase markers, one of which is located at the center of mass, trace the motion of the block. The wooden block is on shelf of M3 cabinet, and butcher paper is in glass cabinet B4.