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5 Circular - Chapter 5 Dynamics of Uniform Circular Motion...

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Chapter 5 Dynamics of Uniform Circular Motion 70 Chapter 5 DYNAMICS OF UNIFORM CIRCULAR MOTION PREVIEW An object which is moving in a circular path with a constant speed is said to be in uniform circular motion . For an object to move in a circular path, there must be a force exerted on the object which is directed toward the center of the circular path called the centripetal force . This centripetal force gives rise to centripetal acceleration . This centripetal force can be provided by tension in string, friction acting between tires and the road, or the gravitational force holding a satellite in orbit around a planet or star. The content contained in sections 1 – 4 and 5 – 8 of chapter 5 of the textbook is included on the AP Physics B exam. QUICK REFERENCE Important Terms centripetal acceleration the acceleration of an object moving in circular motion which is directed toward the center of the circular path centripetal force the central force causing an object to move in a circular path period the time for one complete cycle or revolution satellite motion the motion of a satellite orbiting under the influence of gravity in a circular or elliptical path around a larger mass tangential velocity the velocity tangent to the path of an object moving in a curved path uniform circular motion motion in a circular path of constant radius at a constant speed
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