How a rotating sphere can rotate all the objects on the surface aswell?

How do I rotate all my game objects on the surface of a rotating sphere (a planet).

I have a ball, which collides and bounces (physic material) when reaching the planet and always stays at the exact same spot when it stops bouncing.

Here are some snippets:

 transform.Rotate (0, RotationDegreesPerSecond * Time.deltaTime, 0);  // Rotating planet

 //Gravity sphere <-> planet
 gameObject.GetComponent<Rigidbody>().AddForce((_mittigeKugelPos - transform.position).normalized * Accelaration);