We need to find the reaction force at the frictionless support. Right click on Solution (B5) > Insert > Probe > Force Reaction.
In "Details of Force Reaction", Select Boundary Condition for Location Method and Frictionless Support for Boundary Condition.
The problem is ready to be solved.
You have the option of using multiple processors. Click on Solution and change the number of cores from 2 to 4.
You may click on to start the simulation.