ERIC Number: EJ1057025
Record Type: Journal
Publication Date: 2015-Apr
Abstractor: As Provided
Reference Count: 3
Relating Time-Dependent Acceleration and Height Using an Elevator
Kinser, Jason M.
Physics Teacher, v53 n4 p220-221 Apr 2015
A simple experiment in relating a time-dependent linear acceleration function to height is explored through the use of a smartphone and an elevator. Given acceleration as a function of time, a(t), the velocity function and position functions are determined through integration as in v(t)=? a(t) dt (1) and x(t)=? v(t) dt. Mobile devices such as smartphones or tablets have accelerometers that capture slowly evolving acceleration with respect to time and can deliver those measurements as a CSV file. A recent example measured the oscillations of the elevator as it starts its motion. In the application presented here the mobile device is used to estimate the height of the elevator ride. By estimating the functional form of the acceleration of an elevator ride, it is possible to estimate the height of the ride through Eqs. (1) and (2).
Descriptors: Time, Physics, Scientific Concepts, Science Experiments, Handheld Devices, Telecommunications, Measurement Equipment, Measurement, Computation, Science Instruction
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: email@example.com; Web site: http://scitation.aip.org/tpt
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Authoring Institution: N/A