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9 Newton's Laws and Uniform Circular Motion

# 9 Newton's Laws and Uniform Circular Motion - You are given...

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A ball swings in a horizontal circle at constant speed, as shown. Draw a force diagram for the ball from the top view. (You may neglect gravity.) Top View
A 1.5 kg ball swings in a horizontal circle at a constant speed of 6.0 m/s, as shown. If the string is 2 m long, what is the tension in the string? Top View

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A 1.5 kg ball swings in a vertical circle at a constant speed of 100.0 m/s, as shown. If the string is 2 m long, the tension in the string at the moment the ball is at the top is: a. greater than mv 2 /r b. equal to mv 2 /r c. less than mv 2 /r Side View
A 1.5 kg ball swings in a vertical circle at a constant speed of 100.0 m/s, as shown. If the string is 2 m long, what is the tension in the string at the moment the ball is at the top? Side View

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You are on a merry-go-round that is spinning very fast. When you let go, you are thrown to the outside (and completely off). What force threw you out?

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Unformatted text preview: You are given a joy ride in a trick plane at the bed and breakfast north of Houghton. The pilot does a complete vertical circle. Rate the magnitude of the normal force of your seat on you at the four positions shown from least to greatest. A B C D The earth revolves around the sun once every year. We know that the sun is pulling the earth toward it. Why does the earth not plummet toward the sun, killing us all? (Explain with a force/velocity diagram.) A 0.5 kg tetherball swings in a horizontal circle at constant speed. Draw a force diagram for the ball. 30° A 0.5 kg tetherball swings in a horizontal circle at constant speed. What is the magnitude of the tension in the 1 m string? 30° A 0.5 kg tetherball connected to a 1 m string swings in a horizontal circle at constant speed. What is the speed of the ball? 30°...
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