Balloon Powered Vehicle Newtons 3rd Law

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Balloon Powered VehicleNewtons 3rd Law

• Michael Rust
• UC Project STEP
• October 8, 2004

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Outline

• Introduction
• Newtons 3rd Law
• Engineering Design
• Description of the project

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Newtons 3rd Law

• When a force due to object B acts on object A,
  then a force due to object A also acts on object
  B

FA
A
B
FB

• These two forces are equal, but are in the
  opposite direction
• FA -FB
• MAaA -MBaB

What happens if the masses are the same?
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Newtons 3rd Law

• What happens when the two objects have different
  masses?

• Which force is greater?

• Fbat -Fball
• The forces are still equal!

• What about accelerations?

• Mbatabat -mballAball
• The accelerations are not equal!

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Summary

• When two objects interact, their forces are
  always equal and opposite
• If their masses are the same, their accelerations
  are the same, but in opposite directions
• If their masses are different, their
  accelerations will be different and in opposite
  directions

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Balloon Power Source

• Can we use a balloon as a power source?

Fballoon
What happens to the balloon?
Fair
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Balloon Powered Vehicle

• Goal
• Design and construct a balloon powered vehicle
  for a competition on Monday
• Work in groups of 2
• Competition Criteria
• Distance traveled
• Cost factor
• Creativity
• Lab report
• Constraints
• Power source - balloon
• Money materials

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Materials Costs
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Engineering Design

• Determine functions/goals
• Identify constraints
• Do initial design
• Test/evaluate
• Revise/iterate

Today
Monday