Today in class we spent most of our time trying to understand the centripetal acceleration using examples drawn on the board. The first example was of a roller coaster that does a loop. at the right side of the loop the acceleration is pointing south west, at the top it is pointed straight downwards, and at the left side it is pointed southeast.
After we looked at the centripetal motion of the roller coaster, we took the picture of a circle and took the velocity at four points on the circle. The first figure represents the velocity vectors of each point taken on the circle, and the second figure shows the acceleration of each of the vectors. The acceleration of vector 1 goes down to the left because when the components of normal force pushing to the left and gravitational force are combined, the result is a southwest pointing vector which is the acceleration.
After we finished looking over centripetal acceleration, we used variables to convert what we already know about centripetal acceleration into an equation to find acceleration. The final equation to find acceleration comes out to be V^2/R , where v is velocity of the object and R is the radius from the center of the circle to the object.
Hw: Re-do Hw 3e with the notes we took today
Next scribe is Dylan
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