Local rotation of Spetial with Physics Node

I am trying to rotate an Object with its physics Node on a specified location.

When i try to use the following line in the simpleUpdate,

rotorModel.rotate(0, 0.15ftpf, 0)

rotorModelPhysics.rotate(0, 0.15f
tpf, 0);

The Model rotates on its axis, and it also rotated centering the origin(0,0,0). But I want to rotate on the location that i have specified.

How do I rotate the object with its physics node on a certain location?Do I always need to handle the Spatial and Physics Node separately.