The sphere is one of the many basic shapes in the continously changing world of sketchyphysics. When a shape or object is set to sphere, its collisionmesh will act like a, well, sphere.This is one of the instant shapes a.k.a Sketchy Solids you'll find in the shapes toolbar when you run sp.

The UI
Joints SliderPistonHingeServoMotorGyroFixedCorkscrewSpringBallUniversalGears
States StaticFrozenIgnoreNoCollisionShowCollisionNoAutoFreezeMagnetic
Properties MagnetThrusterEmitterOnTouchOnTick
Shapes defaultboxspherecylinderconecapsulechamferconvexhullstaticmesh