Physics 1A, Section 6

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Physics 1A, Section 6

• December 4, 2008

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Section Business

• Final is 4 hour long.
• History suggests you should expect an orbit
  problem.
• History suggests you should expect a fluid
  problem (continuity eq., Bernoullis eq.,
  Archimedes princ.).
• Otherwise, covers the full course, back to week
  1.
• Im observing in Hawaii Dec. 5 17.
• only available by email cdd_at_submm.caltech.edu

3
OM, Problem 4-55
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OM, Problem 4-55

• Answer
• maximum height R R/2Rg/u2 u2/Rg
• (for u2 Rg)
• specific case u 30 km/h, R 0.80 m, g
  9.80 m/s2 ? 4.39 m

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Quiz Problem 5
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Quiz Problem 5

• Answer
• a) gravity, normal force, friction
• b) a gsin? - ?cos?
• c) gravity, tension, fictitious force up the ramp
• d) tan? ?

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Quiz Problem 31
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Quiz Problem 31

• Answer
• a) v v M1/(M1M2)
• b) v v(5Rg) (M1M2)/M2

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The Physics of Billiards
F
h

• Question
• At what height should a billiard ball be struck
  so that it rolls without slipping? (Assume
  negligible coefficient of friction from the
  table.)

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The Physics of Billiards

• Answers
• h 7/5 R, R radius

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conservation of angular momentum
inelastic collision
conservation of energy after collision
physical pendulum
initial conditions
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Archimedes Principle
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OM Problem 18-82
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OM Problem 18-82

• Answer
• zmax h/2
• xmax h

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OM Problem 9-69
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Section Business

• Final is 4 hour long.
• History suggests you should expect an orbit
  problem.
• History suggests you should expect a fluid
  problem (continuity eq., Bernoullis eq.,
  Archimedes princ.).
• Otherwise, covers the full course, back to week
  1.
• Im observing in Hawaii Dec. 5 17.
• only available by email cdd_at_submm.caltech.edu

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OM, Problem 3-62
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Quiz Problem 33
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Quiz Problem 33

• Answer
• a) ? v/R
• b) sin ? kv/(mgR2)
• c) mgv k?2

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conservation of angular momentum
relative velocities
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Bernoullis Equation
continuity equation
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