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Pendrill, Ann-Marie – Physics Education, 2022
Students' understanding of forces in circular motion is often incomplete. The problems are not limited to confusions about centripetal acceleration and centrifugal forces. This paper considers possible effects of different interventions by a teacher who has discovered the many types of free-body diagrams drawn by students for circular motion in a…
Descriptors: Intervention, Teaching Methods, Physics, Science Instruction
Pili, Unofre; Violanda, Renante – Physics Education, 2019
This article considers a further experimental demonstration of the equations of projectile motion employing the popular video-based motion modeling tool called Tracker. Using a downloaded video--of a free throw attempt by the NBA star Lebron James--from YouTube.com, the primary equations of projectile motion, together with a number of projectile…
Descriptors: Physics, Science Instruction, Teaching Methods, Video Technology
Galeriu, Calin; Edwards, Scott; Esper, Geoffrey – Physics Teacher, 2014
We cannot hope for a new generation of scientists and engineers if we don't let our young students take ownership of their scientific and engineering explorations, if we don't let them enjoy the hands-on cycle of design and production, and if we don't let them implant their creativity into a technologically friendly environment.…
Descriptors: Science Instruction, Scientific Principles, Motion, Hands on Science
Real-Time Demonstration of the Main Characteristics of Chaos in the Motion of a Real Double Pendulum
Vadai, Gergely; Gingl, Zoltan; Mellar, Janos – European Journal of Physics, 2012
Several studies came to the conclusion that chaotic phenomena are worth including in high school and undergraduate education. The double pendulum is one of the simplest systems that is chaotic; therefore, numerical simulations and theoretical studies of it have been given large publicity, and thanks to its spectacular motion, it has become one of…
Descriptors: Undergraduate Study, Computer Software, Motion, Laboratory Equipment
Abellan-Garcia, Francisco J.; Garcia-Gamuz, Jose Antonio; Valerdi-Perez, Ramon P.; Ibanez-Mengual, Jose A. – European Journal of Physics, 2012
The aim of this paper is to determine the acceleration due to gravity "g", using a simple and low-cost experimental device. The time taken for a metallic ball to travel a predetermined distance is measured and recorded by a series of optical sensors. Four pairs of sensors are placed along the external surface of a vertical methacrylate tube at…
Descriptors: Physics, Science Instruction, Scientific Principles, Science Experiments
Muller, Thomas; Frauendiener, Jorg – European Journal of Physics, 2011
In a first course of general relativity, it is usually quite difficult for students to grasp the concept of a geodesic. It is supposed to be straight (auto-parallel) and yet it "looks" curved. In these situations, it is very useful to have some explicit examples available which show the different behaviour of geodesics. In this paper, we present…
Descriptors: Geometric Concepts, Science Instruction, Scientific Principles, Physics
Molina-Bolivar, J. A.; Abella-Palacios, A. J. – European Journal of Physics, 2012
The aim of this paper is to introduce a simple and low-cost experimental setup that can be used to study the eddy current brake, which considers the motion of a sliding magnet on an inclined conducting plane in terms of basic physical principles. We present a set of quantitative experiments performed to study the influence of the geometrical and…
Descriptors: Physics, Science Instruction, College Science, Undergraduate Students
Ganci, Alessio; Ganci, Salvatore – Physics Education, 2010
In the study of kinematics it is often emphasized that freefall time is independent of particular parabolic trajectory, provided that the initial velocity is parallel to the horizontal plane. There are various experiments to prove features of freefall in textbooks and other literature. Using a PC one can make precise measurements of time intervals…
Descriptors: Intervals, Textbooks, Motion, Physics
Kraftmakher, Yaakov – European Journal of Physics, 2010
Experiments with an electric motor provide good opportunity to demonstrate some basic laws of electricity and magnetism. The aim of the experiments with a low-power dc motor is to show how the motor approaches its steady rotation and how its torque, mechanical power and efficiency depend on the rotation velocity. The tight relationship between the…
Descriptors: Engines, Energy, Science Experiments, Motion
Costa Leme, J.; Moura, C.; Costa, Cintia – Physics Teacher, 2009
This paper describes the use of open source video analysis software in the study of the relationship between the velocity of falling objects and time. We discuss an experiment in which a steel sphere falls in a container filled with two immiscible liquids. The motion is similar to that of a skydiver falling through air.
Descriptors: Motion, Science Instruction, Physics, Computer Uses in Education
Kraftmakher, Yaakov – European Journal of Physics, 2009
When data with and without an optically active sample are acquired simultaneously while one manually rotates the analyser, the graph of the first signal versus the second one is an ellipse whose shape shows the phase shift between the two signals; this shift is twice the optical rotation. There is no need to measure the rotation of the analyser or…
Descriptors: Optics, Science Instruction, Motion, Scientific Principles
Thompson, Bruce – Physics Teacher, 2007
The motion of the planets in their orbits can be demonstrated to students by using planetarium software programs. These allow time to be sped up so that the relative motions are readily observed. However, it is also valuable to have the students understand the real speed of the planets in their orbits. This paper describes an exercise that gives…
Descriptors: Science Instruction, Astronomy, Physics, Motion
Zou, Xueli; Dietz, Eric; McGuire, Trevor; Fox, Louise; Norris, Tiara; Diamond, Brendan; Chavez, Ricardo; Cheng, Stephen – Physics Teacher, 2008
Since Robert Millikan discovered the quantization of electric charge and measured its fundamental value over 90 years ago, his oil-drop experiment has become essential in physics laboratory classes at both the high school and college level. As physics instructors, however, many of us have used the traditional setup and experienced the tedium of…
Descriptors: Photography, Physics, Laboratory Equipment, Motion