chap6 - Circular Motion and Other Applications of Newtons...

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1 Circular Motion and Other Applications of Newton’s Laws Uniform Circular Motion
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2 Which statement correctly describes what happens at the bottom of a (uniformly rotating) ferris wheel? 1 2 3 4 2 20 42 124 1. Gravity is reduced so the net force is upwards 2. The normal force by your seat provides the centripetal acceleration 3. The centrifugal force is added to the gravitational force to pull you to the outside 4. The centripetal force is increased compared to when you’re at the top of the wheel. “Centripetal Force” • Forces causing centripetal acceleration: friction, gravity, normal forces, tension … • NOT a ‘new force’ … but rather, a resultant force.
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3 The Earth is slightly flattened at the poles; which of the following statements is true? 1 2 3 16 60 120 1. An object weighs more at the equator than at the poles. 2. The normal force exerted upwards on a stationary object at the poles is larger than that at the equator. 3.
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This note was uploaded on 09/25/2011 for the course PHYS 131 taught by Professor Bennewitz during the Spring '07 term at McGill.

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chap6 - Circular Motion and Other Applications of Newtons...

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