College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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How are centripetal acceleration and
| A |
Centripetal force is always less than centripetal acceleration. |
|
| B |
Centripetal acceleration is the square root of centripetal force. |
|
| C |
Centripetal force and centripetal acceleration are two terms for the same concept. |
|
| D |
Centripetal force is centripetal acceleration multiplied by mass. |
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- A 35.0-kg child swings in a swing supported by two chains, each 2.98 m long. The tension in each chain at the lowest point is 440 N. (a) Find the child's speed at the lowest point.m/s(b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)N (upward)arrow_forwardIn the Skycoaster amusement park ride, riders are suspended from a tower by a long cable. A second cable then lifts them until they reach the starting position indicated is shown. The lifting cable is then released, and the riders swing down the circular arc shown. If the four riders have a total mass of 270 kg, what are the tensions in the two cables just before release?arrow_forwardHi, I really appreciate you taking the time to help me out! John places a coin on a horizontal turntable with a rubber surface. The coin is 28 cm from the center of the circular table. He notices that the coin just begins to slip when the table rotates at 45 rpm (revolutions per minute). What is the coefficient of static friction between the coin and turntable?arrow_forward
- Answer the question correctly. Thank you!arrow_forwardReview Example 5, which deals with the bobsled in Figure 5.5. Also review Conceptual Example 4. The mass of the sled and its two riders in Figure 5.5 is 312 kg. Find the magnitude of the centripetal force that acts on the sled during the turn with a radius of (a) 33.0 m and (b) 24.0 m. Qu Nur Blar Qu 34 m/s Nur Blan Qu Num Blan Que Num Blan Vie Que Num Blank Que Nume Blank (a) Number Que Nume Blank (b) Number r= 33 m -24 m Figure 5.5 Units Units O (arrow_forwardA jet pilot flies his aircraft in a vertical loop at a speed of 1200 km/h. Part A What is the minimum radius of the circle (in meters) such that the pilot experiences no more than 6.0 g of centripetal acceleration when at the bottom of the loop? Part B The pilot has a mass of 78 kg. What is his effective weight at the bottom of the loop? Part C The pilot has a mass of 78 kg. What is his effective weight at the top of the loop? (Assume the same speed.)arrow_forward
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