Scientific Reasoning
G1-81: OUIJA WINDMILL
Category: G1 Simple Harmonic Motion
Purpose:
Illustrate a combination of simultaneous orthogonal oscillations.
B4-04: SPRING AND STRING THING
Category: B4 Elasticity
Purpose:
Illustrate series and parallel springs in a counterintuitive way.
C5-41: HOURGLASS PROBLEM
Category: C5 Third Law of Motion
Purpose:
Demonstrate the solution to the famous "hourglass problem," or Galileo's water bucket
B3-15: FOOL'S TACKLE
Category: B3 Simple Machines
Purpose:
Illustrate analysis of forces in a pulley system
B2-41: ROBERVAL BALANCE
Category: B2 Equilibrium of Forces and Torques
Purpose:
Demonstrate a paradox in equilibrium of forces and torques
B1-12: CENTER OF MASS - HINGED STICK PARADOX
Category: B1 Center of Mass Statics
Purpose:
Illustrate the center of mass in a surprising way
G2-07: PSYCHOACOUSTIC VIBRATION TRANSDUCER
Category: G2 Resonance and Coupled Oscillations
Purpose:
Challenge your students to recognize pseudoscience while illustrating resonance
C5-02 SPRING AND PULLEY PARADOX
Category: C5 Third Law of Motion
Purpose:
Show that the action-reaction pairs have equal magnitude
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B4-01 HOOKE'S LAW
Demonstrate the linear relationship between force and stretching for a simple spring. Read More
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B4-02: HOOKE'S LAW - COMPRESSING A SPRING
Demonstrate Hooke's law for a spring under compression.
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B4-03: SPRINGS IN SERIES AND PARALLEL
Show static combinations of springs Read More
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B4-04: SPRING AND STRING THING
Illustrate series and parallel springs in a counterintuitive way.
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B4-11: ELASTIC LIMIT OF RUBBER BAND
Demonstrate Hooke's law and elastic limit.
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B4-12: ELASTIC LIMIT OF SOLDER SPRING
Demonstrate the elastic limit for an inherently inelastic object.
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B4-13: ELASTIC LIMIT OF A BALLOON
Burst a balloon.
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B4-14: ELASTIC LIMIT OF WIRE
Demonstrate the variation in tensile strength with wire diameter.
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B4-21: DEFLECTION OF BEAM - OPTICAL LEVER
Demonstrate the small deflection of an aluminum beam due to weighting between supports.
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B4-31: FAILURE OF WOOD IN COMPRESSION
Demonstrate the dependence of the compressional strength of wooden dowels on their diameter and length.
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B4-32: CAN CRUSHER - WALL STABILITY
Show how a small change in the geometry of the can wall can dramatically affect its ability to support a… Read More
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B4-33: EGG CRUSHER
Show that an egg can support unexpectedly high forces due to its curved shape.
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