Are you looking to make a sand castle but then it rains? We have a fix for you: K’Nex. We tested K’Nex Education STEM Exploration Levers and Pulleys Building Set (No. 79319). It is a fun but ...

Problem: A small, low mass, pulley has a light string over it connected to two masses, m 1 and m 2.If released from rest, what is the acceleration of the two masses.