Prony brake

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Elements of a typical Prony brake

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Prony brake

mechanics

Learn about this topic in these articles:

description and use

In dynamometer
A Prony brake (see figure) develops mechanical friction on the periphery of a rotating pulley by means of brake blocks that are squeezed against the wheel by tightening the bolts until the friction torque FR balances the torque WL. A water brake creates a resistance by…
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work of Prony

In Gaspard de Prony
He invented the Prony brake (1821), a device for measuring the power developed by an engine. In the Prony brake, brake blocks are squeezed against a rotating wheel, and the friction generated at the ends of the wheel applies torque to a lever; a scale measures the force…
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