Summary

• Universal Law of Gravity
• Orbits
• Kepler's Third Law

• Class Quiz    Timer
  
  

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  Chapter 13

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• Reading Quiz



• Oscillatory motion
  • mass on a spring applet
  • mathematical description of position, velocity, acceleration
  • amplitude, period applet
    Example #1
    
  • simple pendulum applet
    Example #2
    

 
The mass of Venus is 80% that of the earth while its radius is 95% that of the earth. What is the value of the acceleration due to gravity on Venus? (Use g_Earth = 9.80 m/s²).
A. 8.25 m/s²
B. 8.69 m/s²
C. 11.1 m/s²
D. 11.6 m/s²
Answer















Walker4e
Reading quiz At which location(s) is the magnitude of the acceleration of a mass on a spring a maximum?
A. (c) only
B. (d) only
C. (a), (c), and (e)
D. (b) and (d).
Answer















kw4
A spring has a spring constant of 200 N/m. What mass is needed to obtain an oscillation with a period of 0.50 s?
A. 0.314 kg
B. 1.27 kg
C. 2.53 kg
D. 15.9 kg
Answer















kw4
How long should a pendulum be in order to have a period of exactly one second?
A. 1.56 m
B. 0.248 m
C. 4.03 m
D. 387 m
Answer















 



B. 8.69 m/s²





















 



C. (a), (c), and (e)

The acceleration is maximum when the force is maximum, and the force is maximum when the spring is stretched or compressed the most. That occurs when x = ±A, at the endpoints of the oscillatory motion.
























 



B. 1.27 kg





















 



B. 0.248 m