# box2d prismatic joint friction

I know it is possible to add friction to rev joints by enabling motor and adding maxMotorTorque. I want the same for prism joint but only maxMotorSpeed option is available which didn't quite work for me. Is there another way?

## 1 Answer

The function you are looking for is SetMaxMotorForce. This function is analogous to SetMaxMotorTorque for b2RevoluteJoints.

• You are right, it should be called force instead of torque as it is not rotating. So that is the correct terminology. – morevitamins Aug 2 '17 at 18:03