Deriving the Parallel Axis Theorem for moment of inertia or rotational inertia.

A formal proof of the parallel axis theorem. It's really useful for finding moments of inertia of composite objects and also objects which aren't rotating around the center of mass.

The nugget introduces and defines a circle and identifying its parts.

In this video I prove (in the 1D case) that the work done by a spring on a particle is equal to the change in elastic energy.

The video teaches basic terminologies and concepts related to circles, using a circular park as an example. It covers the definitions of a circle, radius, diameter, chord, secant, segment, arc, circumference, tangent, and sector. It also...