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Khan Academy
Khan Academy: Loop De Loop Answer Part 2
Watch as Sal Khan figures out a car's average speed while completing a loop de loop. [4:47]
Khan Academy
Khan Academy: Loop De Loop Answer Part 1
Watch as Sal Khan figures out the minimum speed at the top of a loop de loop for a car stay on the track. [6:04]
Khan Academy
Khan Academy: Centripetal Force Problem Solving
In this video, David from Khan Academy gives some problem solving strategies for centripetal force problems and explains many common misconceptions people have about centripetal forces. [14:59]
Khan Academy
Khan Academy: Visual Understanding of Centripetal Acceleration Formula
This video gives a visual understanding of how centripetal acceleration relates to velocity and radius. [9:47]
Khan Academy
Khan Academy: Race Cars With Constant Speed Around Curve
Using a racetrack as an example, this video demonstrates when acceleration could involve a change in direction and not speed.
Khan Academy
Khan Academy: Deriving Formula for Centripetal Acceleration From Angular Velocity
Sal Khan explains how to derive the formula for centripetal acceleration in terms of angular velocity using linear speed formula. [5:29]
Khan Academy
Khan Academy: Change in Centripetal Accel From Chg in Linear Velocity & Radius
Sal Khan solves two problems centering on finding the change in centripetal acceleration from the change in linear speed, and an example of finding the change in centripetal acceleration from the change in radius. [4:56]
Khan Academy
Khan Academy: Magnetic Force on a Proton Example (Part 2)
This video builds off of part 1 where the radius of the circle traveled by the proton calculated by using the formula for centripetal acceleration. [10:39]