15-12-2013, 11:33
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systems engineer (retired)
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Join Date: Nov 2009
Rookie Year: 1969
Location: US
Posts: 8,071
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Physics Quiz 9
Given:
Robot with 4 standard (non-omni non-mec) wheels.
No drivetrain (no gearbox, no chains; just wheels with frictionless bearings)
Total mass of robot *including the wheels* is Mrobot
Total mass of the 4 wheels is Mwheels
Assume that when you push the robot, the wheels rotate (instead of sliding on the floor)
Assume that the mass of the wheels is evenly distributed,
like a solid disc rather than a hoop.
Problem:
Find the "equivalent mass", Me, such that
F = Me*a
...where "a" is the acceleration and "F" is the pushing force.
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This game is all about dealing with the unexpected and making changes on the fly. - Greg Hainsworth [more] 
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