General
formula: MA = output force
input force
Or ratio: MAlever = length of input arm
length of output arm
A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?
Quick Reviews completed today:
A. Page 214 - Calculating Power (1-2)
B. Page 215 - Section Review Questions (1-9)
C. Circle Map: Explain the concept machines and provide examples
Homework: Complete simple machine notes on BLOG
Simple Machines Project given: Due December 20th
SIMPLE MACHINES CHOICE BOARD PROJECT
Create
Create a game that requires the players to
identify the six types of simple machines.
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Design
Design an experiment for one type of simple machine
and have one of your classmates perform it.
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Decide
Visit Edheads.org and complete the activities
recording the type of simple machine you decide is represented.
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Construct
Construct a Rube Goldberg device using at least
4 different types of simple machines and at least 12 steps.
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Draw
Draw an example of each of the three lever
classes. Label the effort, resistance
and fulcrum on each lever. Tell how
each type of lever is used.
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Invent
Invent a compound machine that contains at
least three simple machines.
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Explain
Explain how each type of simple machine makes a
job easier. Use specific examples for
each type of simple machine.
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Solve
Solve the mechanical advantage problems for the
different types of simple machines.
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Classify
Use the simple machine cards and classify them
into the six types of simple machines.
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