The relationship of the mechanics of a falling chimney and a breaking pencil point is presented. A device is discussed that uses a pocket calculator coupled to a telescope to record the angle at which the telescope is pointed. (BB)

Discusses the applications of the principles of mechanics to rock climbing techniques. Provides illustrations showing the applied force vectors. (YP)

Lists several ideas for experiments for the amateur scientist to try or design. The list covers a wide range of topics; sound, mechanics, thermodynamics, fluids, optics, and electrostatics. (GA)

Presents a lesson in the mechanics of rotation which deals with setting the playground swing into motion. Discusses the scientific principles involved in these procedures. Illustrations of several explanations are included. (RT)

Examines hydraulic jumps and suggests several simple experiments which can be carried out with limited equipment. (DS)

Describes an investigation of forces and motions in ten pin bowling. Explores the significance of the spin on the ball, its curved path and other factors which may increase the chance of a strike occurring. Discusses the ball's path and the action of the pins. (CW)