使用Unity3D验证杠杆原理，包括搭建或引用场景，然后通过附加刚体的性质方块，搭建一个跷跷板，实现对杠杆原理的验证。-Use Unity3D verification of leverage, including the build or reference scenario, then additional rigid body block by nature, build a seesaw, the validation of the lever principle.