Polar model builder in 6.01 gives invalid expression error for angular variables

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Polar model builder in 6.01 gives invalid expression error for angular variables

Tammy Humphrey
5 Posts

I am trying to build a polar dynamic model to track an object rotating on a record player. If I include theta or omega in my expression for the force function fr I get the error message "invalid expression: unable to parse" (the variable vr works).