A large wooden block is placed on a rubber surface so that it will not slide. A force is applied with a spring balance, first parallel to the horizontal along the top edge of the block, and then perpendicular to a diagonal drawn to the tipping axis. The required force to tip the block is less when the force is applied at an angle than when it is applied horizontally.
Location: Spring scale HI-1, Block on the floor at the end of aisle E, Rubber mat DE-8, String beginning of aisle D, Clamp “trivial”