Forces in 2D

Balance It!
How can an angled force be balanced by forces that lie along the x- and y-axis? Is that even possible? You bet it is! And if you give this Interactive and its accompanying Help page some time, you're going to become the Master of Balance.

Go for the Gold!
Use Physics to add as many gold coins as is possible to a bag without breaking the rope(s) from which the bag is suspended. Progress from level to level in this game-like challenge. But don't get too greedy for gold or you'll loose both the level and the gold. As they say, you "need to know when to hold them, know when to fold them, know when to walk away and ...". Ahhh! You know what I mean. Just get your calculator out and use Physics.

Atwood's Machine 2D
Newton's second law works in one dimension and in two dimensions ... with one object and with two objects. And in this simulation, you can incrementally add a different nuance to the scenario being studied and easily see how Newton's second law becomes one of the most fundamental mathematical descriptions of the relationship between force, mass, and acceleration.

Thanks to Physics teacher Martin Kirby for contributing this simulation to our Physics Interactives collection. You can view other Kirby Sims here.