Quote:
Originally Posted by Bob Steele
In a frictionless physics lab the mecanum drive would not move the robot.
velocity would be zero
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Ether is right. I use the term "frictionless physics lab" to mean I am ignoring trivial & sometime not so trivial factors to simplify the discussion.
In a truly frictionless lab, velocity for mecanums on a hard surface would be zero. On carpet it would be somewhat less than zero since the compliance in the carpet would give some forces not dependent on gravity.
The angled wheels gives you side force vectors. If the forces are not canceled out, then the robot accelerates in reaction to those forces. Especially in a frictionless physics lab.
My high school physics teacher thought I only took physics to play with the toys. He was largely right.
