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Chapter 5: Circular Motion: gravitation

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Physics Principles with Applications
Pages: 109 - 137
Physics Principles with Applications

Physics Principles with Applications

Book edition 7th
Author(s) Douglas C. Giancoli
Pages 978 pages
ISBN 978-0321625922

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Illustration

125 Questions for Chapter 5: Circular Motion: gravitation

  1. A child sitting 1.20 m from the center of a merry-go round moves with a speed of1.10m/s.Calculate (a) the centripetal acceleration of the child and (b) the net horizontal force exerted on the childmass=22.5kg.

    Found on Page 131

  2. How many "accelerators" do you have in your car? There are at least three controls in the car which can be used to cause the car to accelerate. What are they? What accelerations do they produce?

    Found on Page 130

  3. While driving fast around a sharp right turn, you find yourself pressing against the car door. What is happening?

    Found on Page 131

  4. A car maintains a constant speed v as it traverses the hill and valley shown in Fig. 5–34. Both the hill and valley have a radius of curvature R. At which point, A, B, or C, is the normal force acting on the car (a) the largest, (b) the smallest? Explain. (c) Where would the driver feel heaviest and (d) lightest? Explain. (e) How fast can the car go without losing contact with the road at A?

    Found on Page 130

  5. Two satellites orbit the Earth in circular orbits of the same radius. One satellite is twice as massive as the other. Which statement is true about the speeds of these satellites?

    Found on Page 132

  6. A bucket of mass 2.00 kg is whirled in a vertical circle of radius 1.20 m. At the lowest point of its motion the tension in the rope supporting the bucket is 25.0 N.

    Found on Page 132

  7. A space shuttle in orbit around the Earth carries its payload with its mechanical arm. Suddenly, the arm malfunctions and releases the payload. What will happen to the payload?

    Found on Page 132

  8. How many revolutions per minute would a 25-m-diameter Ferris wheel need to make for the passengers to feel “weightless” at the topmost point?

    Found on Page 132

  9. Can a particle with constant speed be accelerating? What if it has constant velocity? Explain.

    Found on Page 130

  10. A penny is placed on a turntable which is spinning clockwise as shown in Fig. 5–37. If the power to the turntable is turned off, which arrow best represents the direction of the acceleration of the penny at point P while the turntable is still spinning but sl

    Found on Page 132

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