Try out the new iClone 7 for FREE: https://www.reallusion.com/iclone/download.html
Learn more how iClone can create 3D characters and animations here: http://www.reallusion.com/iclone/default.html
Watch more: http://www.reallusion.com/iclone/iclone_feature_physics.aspx
Previously, iClone allowed you to adjust constraint settings to simulate the dropping behavior of a rigid body object in a certain range or direction. However, all the connection settings were invisible, making it difficult to observe and modify. The new constraint gizmo tool in iClone 6 makes it a lot easier to design physics objects while clearly observing the relations between two separate items.