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Chapter5

# Chapter5 - Chapter5 CircularMotion;Gravitation thecircle...

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Chapter 5 Circular Motion; Gravitation

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Centripetal Acceleration Centripetal means “Center Seeking” and the  centripetal force on an object moving in a  circle  always acts towards the center of  the circle . By definition: a = V 2 /R where V = linear or  tangential speed, and R is the radius of the  circle.
Centripetal Force Centripetal Acceleration results from a  Centripetal Force  since accelerations are  always caused by outside forces Since F = ma and centripetal acceleration  is a c   = V 2 /R then it follows that Centripetal Force,  F c   = mV 2 /R

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Centripetal Force According to Newton’s 1st Law.  An object in motion tends to  stay in motion.  It has been shown that this is  straight line  motion.    Things want to move in straight lines, so when something is  moving in a circle there must be a force causing it to stay in  the circle and constantly changing the direction of its motion. Examples When car is rounding a curve, friction between the tires and the  road which is providing (not opposing) the centripetal force.
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Chapter5 - Chapter5 CircularMotion;Gravitation thecircle...

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