Is there any way to add static physics object in panda3d's physics engine?

I am trying to make a 3D platformer game with panda3d, but instead of using ODE or Bullet as a physics engine, i thought of using panda3d’s physics engine, so when i ran the code the platforms fall with the player, so is there anyway to make the platforms static so it is not affected by the gravity of the world, i know this is possible with bullet, but it would be nice if there is a way to do it with panda3d’s physics engine.