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Author Question: A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and ... (Read 88 times)

lb_gilbert

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on: Jul 29, 2018
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What are the (a) maximum speed and (b) maximum acceleration of the tip of the needle?
 
  What will be an ideal response?

Question 2

A camera with a 20-cm diameter lens is recording images using a filter that allows only light of wavelength 600 nm to pass through.
 
  (a) What is the limit on the angular resolution (in microradians) in this case?
  (b) What is the diameter of the minimum-sized features that could be resolved on Mars with this camera? The distance to Mars at the time is 9.0  107 km.


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zoeyesther

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

(a) 20.3 cm/s (b) 326 cm/s2

Answer to Question 2

(a) 3.7 rad (b) 330 km


lb_gilbert

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Reply #2 on: Jul 29, 2018
TY


zoeyesther

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Reply #3 on: Jul 29, 2018
You're welcome


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