Mobile Project Cherie Lehman WLHS. Mobile Project w Mobiles Inspired by Work of Alexander Caulder w Mobiles -- Blend of Physics and Art w Mobile Construction.

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Presentation transcript:

Mobile Project Cherie Lehman WLHS

Mobile Project w Mobiles Inspired by Work of Alexander Caulder w Mobiles -- Blend of Physics and Art w Mobile Construction -- Torque Assessment

Alexander Calder w Received a degree in mechanical engineering but soon after decided to pursue a career as an artist.

Caulder Examples

1957 NY Port Authority

Constellation & Tower

Mobile Supported by Stabile

Authentic Assessment w Students apply the concepts learned in the unit Torque Balance Center of Mass Pivot

Project Details w Project counts as an exam w Design plan must accompany mobile Diagram of mobile showing locations of weights for each tier Torque calculations for each tier Mobile itself

Mobile Requirements w Your mobile should have a theme For example, a mobile with an astronomical theme would contain stars, planets, comets, etc.  Each mobile must contain 5 tiers  At least 1 tier must contain 3 masses w At least 2 tiers must be pivoted from a point other than the cg of the support rod  You must include a layout of the mobile design

Design Layout for Each Tier  the mass of the support rod  the masses of the hanging ornaments  the lengths of the respective lever arms  the location of the pivot  Mathematical proof that the torques are balanced

Design Plan  If the mass of your support rod is significant compared to the masses of your hanging ornaments, be sure to include the torque exerted by the weight of the support rod in your calculations.

Mobile Grading Scheme  25 pts. for your design plan  25 pts. for the 5 tiers -- 5 pts. for each tier  5 pts. for one tier containing 3 masses w 10 pts. for two tiers pivoted at point other than cg of support rod  10 pts. for proper balance -- i.e. horizontal orientation of supports

Grading Scheme Continued w 10 pts. for theme w 15 pts. for artistic design and aesthetic value  BONUS: 5 pts. bonus for science theme  BONUS: 5 pts. bonus for extra tier w 100 pts. total

Toys in the Attic

Stars Mobile

Life Cycle of a Star

Molecules

Evolution of Music

Sports

Scientists

Toys

Calculating Torques

Final Adjustments

The Food Chain

Geology Mobile