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Author Question: An object attached to an ideal spring executes simple harmonic motion. If you want to double its ... (Read 110 times)

shofmannx20

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on: Jul 29, 2018
An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could
 
  A) double the amplitude of vibration.
  B) double the force constant (spring constant) of the spring.
  C) double both the amplitude and force constant (spring constant).
  D) double the mass.
  E) double both the mass and amplitude of vibration.

Question 2

A ball is projected upward at time t = 0 s, from a point on a flat roof 10 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground.
 
  The initial velocity of the ball is Consider all quantities as positive in the upward direction. At time the vertical velocity of the ball is closest to A) 0 m/s.
  B) +175 m/s.
  C) +12 m/s.
  D) -175 m/s.
  E) -12 m/s.


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Anton

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

B

Answer to Question 2

A


shofmannx20

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


Anton

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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