Posted by: Sam May to Sciences » AP Physics » Videos » Momentum
Short Description of the concepts of rotational inertia
Score: 50Neil Zheng says: I enjoyed the attention to detail that Sam put into each drawing, which also helped me understand the physics concept. I think particularly the end example was helpful as it demonstrates that less rotational inertia is needed for a object with less radius, allowing balls with less radius to go faster down a ramp. I previously thought otherwise because bigger wheels on cars seem to travel more distance than smaller wheels, but I realized is when the two wheels travel at the same angular velocity, which is not the case here.