Physics 105 Daily Exercise for Tuesday 9/10 (Due 9/15)

  1. In order to mimic the retrograde motion of the planets, Ptolemy has to add what device to model?
  2. In order to mimic the fact that Mercury and Venus never stray from Sun, Ptolemy has to add what device to his model?
  3. In order to mimic the fact that the speeds of the planets and sun change, Ptolemy has to add what devices to his model?

Answer in the form below, a short answer for each is fine. 
This report is due by 8:00 am Tuesday morning.

Your Name:  

Answers:

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