This happens because angular momentum is conserved. Angular momentum is an object's moment of inertia times its angular velocity. If one of the latter two increases, the other decreases, and vice ...

Much like a figure skater pulling their limbs in to speed up a spin, the more mass an object has near its axis, the faster it will roll. This is called the conservation of angular momentum!

The moment of inertia depends on the mass of an object and how that mass is distributed about the axis of rotation. Note: things can actually get much more complicated than this.

Speedy Spinning Spheres! Using spheres, cylinders, and straws, the Crew and Dr. Rob learn about inertia, velocity, and conservation of energy due to angular momentum. STEM Challenge: Angular ...

For an extended object (like the merry go round), the angular momentum is (again - the scalar form): Here, I is the moment of inertia for that object (or what I like to call the rotational mass).

The angular momentum will remain the same while the diver is falling, but what the diver can change is his or her moment of inertia. How? By moving one’s limbs closer to the point of rotation (i ...

In addition to an Adrenaline Rush, there are a lot of physics involved in making rollercoasters so much fun to ride. The Transfer of Energy and Angular Momentum are two of the keys.