Note:  Another way to simulate a rigid body is by using an immersed solid that uses a Domain Motion option of Rigid Body Solution. In this case, the rigid body settings appear in the details view for the immersed solid domain. All of the rigid body settings for an immersed solid appear on the Basic Settings tab for the immersed solid domain. The analogous settings for the rigid body object are distributed between the Basic Settings and Dynamics tabs of the rigid body object. Although there are initialization settings on the Initialization tab of the rigid body object, there are no corresponding initialization settings for a rigid body defined as an immersed solid.