This is a classic introductory physics problem. Basically, you have a cart on a frictionless track (call this m 1) with a string that runs over a pulley to another mass hanging below (call this m 2).

My recent post on tightropes reminded me of a great "hack." Here's the situation. Your car is stuck in the mud, so you grab a rope and tie it to the front of the car and then the other end to a very ...

Physics, particularly forces and motion, can be challenging. By observing everyday motion, conducting simple experiments, and understanding Newton's laws in plain language, the concepts become more ...