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Chapter 8: Dynamics II: Motion in a Plane

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Pages: 182 - 205

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83 Questions for Chapter 8: Dynamics II: Motion in a Plane

  1. In uniform circular motion, which of the following are constant: speed, velocity, angular velocity, centripetal acceleration, magnitude of the net force?

    Found on Page 198
  2. As a science fair project, you want to launch an 800g model rocket straight up and hit a horizontally moving target as it passes 30m above the launch point. The rocket engine provides a constant thrust of 15.0N. The target is approaching at a speed of 15m/s. At what horizontal distance between the target and the rocket should you lau

    Found on Page 198
  3. A golfer starts with the club over her head and swings it to reach maximum speed as it contacts the ball. Halfway through her swing, when the golf club is parallel to the ground, does the acceleration vector of the club head point (a) straight down, (b) parallel to the ground, approximately toward the golfer’s shoulders, (c) approximately toward the golfer’s feet, or (d) toward a point above the golfer’s head? Explain.

    Found on Page 198
  4. A highway curve of radius 500m is designed for traffic moving at a speed of 90km/h. What is the correct banking angle of the road?

    Found on Page 199
  5. It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a 1000-mdiameter cylinder that rotates about its axis. The inside surface is the deck of the space station. What rotation period will provide “normal” gravity?

    Found on Page 199
  6. A 5.0gcoin is placed 15cmfrom the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of μs=0.80and μk=0.50.The turntable very slowly speeds up to 60rpm.Does t

    Found on Page 199
  7. Mass m1on the frictionless table of FIGURE EX8.13 is connected by a string through a hole in the table to a hanging mass m2. With what speed must m1 rotate in a circle of radius rif m2is to remain hanging at r

    Found on Page 199
  8. A satellite orbiting the moon very near the surface has a period of 110min. What is free-fall acceleration on the surface of the moon?

    Found on Page 199
  9. What is free-fall acceleration toward the sun at the distance of the earth’s orbit? Astronomical data are inside the back cover of the book .

    Found on Page 199
  10. A 9.4×1021kgmoon orbits a distant planet in a circular orbit of radius 1.5×108m. It experiences a 1.1×1019Ngravitational pull from the planet. What is the moon’s orbital period in earth days?

    Found on Page 199

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