For the Create, Volume and Connect options of the Field/Solvers menu, see Fields menu.
See Initial State submenu for options.
Assigns the selected Nucleus object to a Maya® Nucleus™ solver. The Maya Nucleus solver calculates Nucleus object simulations (nCloth, nParticle, Soft Body, and nHair objects). For Nucleus objects to interact, they need to share the same Maya Nucleus solver.
Select a solver from the submenu (existing nucleus solvers are listed), or select New Solver to create a new Maya Nucleus solver.
These options display by default, but can be hidden by setting the MAYA_ENABLE_LEGACY_RIGID_BODIES environment variable to 0.
For information about the Legacy Rigid Bodies menu items, see Maya Classic Dynamics.