Translations:Adventist Youth Honors Answer Book/Health and Science/Physics/163/en
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- Method- Drive a number of large nails (16 penny will work well) halfway into the 2x4 and have the class try pulling a nail. Then demonstrate how to position the block of wood to act as a fulcrum. Have the class repeat the experiment using the block of wood.
- Questions-
- Start with a description or demonstration of various machines as described in the theory section. Then ask the class "what kind of machine is a hammer"
- Where is the fulcrum on the hammer?
- Where is the fulcrum when using the block of wood?
- Which way was easier?
- What difference does it make how close the fulcrum is to the block of wood?
- What difference does it make where you grip the hammer? Is it easier near the head or at the end of the handle?
