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Author Question: A harmonic oscillator starts with an amplitude of 20.0 cm. After 10.0 s, the amplitude decreases to ... (Read 133 times)

sc00by25

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on: Jul 29, 2018
A harmonic oscillator starts with an amplitude of 20.0 cm. After 10.0 s, the amplitude decreases to 15.0 cm. If the linear damping coefficient is 2.00 Ns/m, how much mass is oscillating?
 
  A)
 
  30.0 kg
 
  B)
 
  15.0 kg
 
  C)
 
  34.8 kg
 
  D)
 
  17.9 kg
 
  E)
 
  3.88 kg

Question 2

A packing crate slides down an inclined ramp at constant velocity. Thus we can deduce that
 
  A)
 
  a frictional force is acting on it.
  B)
 
  a net downward force is acting on it.
  C)
 
  a net upward force is acting on it.
  D)
 
  it is not acted on by appreciable normal force.
  E)
 
  it is not acted on by appreciable gravitational force.


carolinefletcherr

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

A


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