Tuesday, September 13, 2011

Hand-Powered Elevator

Zack and Austin built a hand-powered elevator with their dad’s help.

Materials:

  • 50 feet of 3/8 inch rope
  • 2 pulleys for 3/8 inch rope
  • Platform
  • 2 8-foot lengths of  1-inch PVC pipe
  • 4 strong stakes
  • Threaded hook
  • Counter-balance weight (bag and cinder blocks)

Equipment:

  • Power drill
  • Sledge hammer
  • Sawzall

Science Principles and Terms:

  • Simple Machines
    • Mechanical Advantage
    • Pulley
    • Lever
    • Wedge
    • Screw
  • Forces
    • Tension
    • Gravity
  • Counter weight/Balance
  • Bar linkage
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1 comment:

  1. UnknownJuly 3, 2013 at 8:55 PM

    How did you determine the counterbalance weight? I have different age and size kids.

    ReplyDelete

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