A block is placed on a rotating turntable. As the turntable rotates, the force of static friction is enough to keep the block rotating in a circle. As the angular speed of the turntable increases, a larger inward force is required to keep the block moving in a circle. As the speed increases, eventually the force required to keep the block moving in circular motion is greater than the maximum force of static friction and the block begins to slide off the table.
