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Electricity science fair project:
Measure the torque of an electric motor by the mass lifted by the motor




Science Fair Project Information
Title: Measure the torque of an electric motor by the mass lifted by the motor.
Subject: Electricity
Grade level: High School - Grades 10-12
Academic Level: Ordinary
Project Type: Experimental
Cost: Low
Awards: 2nd place, Canada Wide Virtual Science Fair (2007)
Affiliation: Canada Wide Virtual Science Fair (VSF)
Year: 2007
Description: In order to measure the torque, the electric motor is suspended off the ground and a string is attached to the axel of the motor while the other end of the string is attached to different weights. The distance the motor lifts the weights off the ground is measured.
Link: http://www.virtualsciencefair.org/2007/benn7b2/
Short Background

An electric motor uses electrical energy to produce mechanical energy. The reverse process, that of using mechanical energy to produce electrical energy, is accomplished by a generator or dynamo. Traction motors used on locomotives and some electric and hybrid automobiles often perform both tasks if the vehicle is equipped with dynamic brakes. Electric motors are found in household appliances such as fans, refrigerators, washing machines, pool pumps, floor vacuums, and fan-forced ovens. They are also found in many other devices such as computer equipment, in its disk drives, printers, and fans; and in some sound and video playing and recording equipment as DVD/CD players and recorders, tape players and recorders, and record players. Electric motors are also found in several kinds of toys such as some kinds of vehicles and robotic toys.

For More Information: Electric Motors - K-12 Experiments & Background Information

Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License)

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