Torque wrench, small socket wrench, 13/16 deep well socket, 40 and 100 Newton scales, bolt welded to rod support

Newton scale, Torque wrench attached to rod

Code Number: 1J40.15

Demo Title: Torque Wrench

Condition: Good

Principle: Center of Mass

Area of Study: Mechanics

Equipment:

Torque wrench, small socket wrench, 13/16 deep well socket, 40 and 100 Newton scales, bolt welded to rod support, bolts.

Procedure:

Hook the large torque wrench onto the nut and tighten to 30 Newtons using the Newton scale. Show that when using the small wrench to loosen, that it takes upwards to 90 Newtons before the nut breaks free.

References:

Richard W. Cole, "Torque and the Bending of Conduit", TPT, Vol. 13, # 3, March 1975, p. 170.
Borislaw Bilash II, “Effort Overcomes Resistance“, A Demo A Day – A Year of Physical Science Demonstrations, p. 261.

1J40.15 - Torque Wrench

Disclaimer

These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist. The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.