A vertical mass ๐ m hanging from a string The string is wrapped around a small pulley (or a small wheel) of radius ๐ r. The small wheel is connected to a larger spinning disk (like a flywheel). The mass drops a vertical distance ๐ฆ y and pulls the string, which causes the disk to spin.Draw a clear boundary around just the disk + wheel to show thatโs your system. Draw an arrow representing the tension ๐ T in the string โ that is the external force doing work. Use this to show Work = torque ร angle: Mostra altro