Provides six problems to help students understand new concepts of force using situations they already understand concerning velocity, acceleration, and momentum. (MVL)

Combines the PASCO Free Fall Adapter with a homemade timing sensor. Provides hints for successful operation of the timer and the Atwood Machine. (MVL)

Traces cosmogonic history of solar system from Laplace's hypothesis of revolving gas nebulae, to Newton's two-body problem with its mathematical impossibility of gravitational capture, to the isosceles three-body problem of Schmidt and Sitnikov with its notion of partial capture, and finally to the total capture model of Alexeyev verified by the…

Situations describing Einstein's Equivalence Principle phrased in prerelativistic Newtonian concepts are presented. (KR)

When a rotating figure skater's fully extended arms are pulled back toward the torso, the angular velocity is noticeably increased and the kinetic energy of the skater can also be shown to increase. Discusses the change of the kinetic energy during such a process, and the work necessary for such an increase is derived using a dynamic equilibrium…

Describes tried and tested methods for introducing vectors and addressing the topics of centripetal acceleration and vector and scalar products to secondary physics students. (Author/WRM)

Presents the summary section of the American Physical Society (APS) report on the safety features of the light-water reactor, reviews the design, construction, and operation of a reactor and outlines the primary engineered safety features. Summarizes the major recommendations of the study group. (GS)

Several universities and a national laboratory are cooperating to study new extremely unstable radioactive nuclei. Descriptions of several projects, facilities, and activities are given. (RH)

This publication is one of a series of information booklets for the general public published by the United States Atomic Energy Commission. Direct energy conversion involves energy transformation without moving parts. The concepts of direct and dynamic energy conversion plus the laws governing energy conversion are investigated. Among the topics…

The text takes a practical approach to the understanding of industrial radiation hazards. It is intended for the layman who requires a basic understanding of the relationship of radiation problems to his own field. Discussion includes such topics as: uses which benefit mankind; radiation energy versus fission energy; effects of excessive radiation…

This document provides a summary history of the individual scientists principally responsible for the development of nuclear physics and a survey of modern utilization of atomic energy. Identified throughout the booklet are postage stamps illustrating each individual and topic discussed. (SL)

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 various aspects of fly casting to illuminate the physics of fishing. They include examining whether the bending of the rod propels the fly as a bow propels an arrow and determining how an angler resists the pull of a hooked fish while reeling it in. (JN)

A homemade device for testing particle scattering is described. Also described are experiments in zero gravity conducted in free fall in the cargo space of an airplane belonging to the National Aeronautics and Space Administration. (JN)