Spring Apart Pasco Carts
![2 pasco carts on a track one with the spring-loaded bar unloaded](/media/libraries/college-of-science-and-engineering/physics/images/demo-images/mechanics/20220815_111355.jpg)
1N20.20
Use the spring apart PASCO carts to demonstrate conservation of linear momentum. The spring is released by pressing the button on the cart as shown in the figure on the right. First, spring the carts apart while they have the same mass. Next, you can increase the mass on one of the carts and ask the students to predict the effect.