anchor: Body:setAngularDamping
  Sets the angular damping of a Body
  
  See Body:getAngularDamping for a definition of angular damping.
  
  Angular damping can take any value from 0 to infinity. It is recommended to stay between 0 and 0.1, though. Other values will look unrealistic.
  Body:setAngularDamping( damping )
  damping number The new angular damping.