- Q23 For The Pendulum In Question 22 When The Pendulum Bob Is Halfway Between The High Point And The Low Point In Its S 1 (18.13 KiB) Viewed 28 times
- Q23 For The Pendulum In Question 22 When The Pendulum Bob Is Halfway Between The High Point And The Low Point In Its S 2 (40.73 KiB) Viewed 28 times
- Q23 For The Pendulum In Question 22 When The Pendulum Bob Is Halfway Between The High Point And The Low Point In Its S 3 (40.73 KiB) Viewed 28 times
018 Diagram *Q19. Which has the greater potential energy: a ball that is 10 feet above the ground or a ball with the same mass that is 20 feet above the bottom of a nearby 50-foot-deep well? Explain. Q20. When a bow and arrow are cocked, a force is applied to the string in order to pull it back. Is the energy of the system increased? Explain. Q21. Suppose the physics instructor pictured in figure 6.15 gives the bowling ball a push as she releases it. Will the ball return to the same point or will her chin be in danger? Explain. Q22. A pendulum is pulled back from its equilibrium (center) position and then released. a. What form of energy is added to the system prior to its release? Explain. b. At sher-poi's in the motion of the pendulum after relexssi octie energy the greatest? Explain. c. At was points is the potential energy the greatest? Explain Q23. For the pendulum in question 22, when the pendulum bob is halfway between the high point and the low point in its swing, is the total energy kinetic energy. potential energy. or both? Explain. Q24. Is the total mechanical energy conserved in the motion of a pendulum? Will it keep swinging forever? Explain. Q25. A sports car accelerates rapidly from a stop and "burns rub- ber." (See everyday phenomenon box 6.1.) a. What energy transformations occur in this situation? b. Is energy conserved in this process? Explain. Q31. Q32. *Q33. Q34. *Q35. "Q36. Q37.