Compound Wires Apparatus- Engineering Lab Training Systems

Features Low cost effective teaching Self-contained Wall-mounted Simple determination of Young s modulus Verification of Hooke s Law Range of specimen material and thickness available Investigation of stresses in compound suspension 3 year warranty Range of Experiments To determine Young s modulus of elasticity for the specimen wire To verify Hooke s Law To evaluate the equivalent modulus of elasticity for the combined wire suspension To determine the load in the wire under conditions of equal strain in each wire. To compare experimental and theoretical results Description Loaded wires form a simple experiment which produces excellent and easy to understand results. A single wire can be used to determine Young s Modulus of Elasticity for the material, and to confirm Hooke s Law. With two wires, the experiment can be widened to investigate the effective characteristics of two different materials subjected to a common strain. Two parallel sets of brackets are secured to a wall minium 2m apart in a vertical line; a top bracket from which to hang a specimen wire, and a slider bracket used to measure the extension of the wire. The slider includes a vernier for accurate measurement. For safety, the lower bracket should be reasonably close to the ground. The lower ends of each slide are connected by a link. A load hanger can be moved along the link until strains are equalised in each wire. The wires may be of different materials, but must be the same length. This equipment is part of a range designed to both demonstrate and experimentally confirm basic engineering principles. Great care has been given to each item so as to provide wide experimental scope without unduly complicating or compromising the design. Each piece of apparatus is self-contained and compact. Setting up time is minimal, and all measurements are made with the simplest possible instrumentation, so that the student involvement is purely with the engineering principles being taught. A complete instruction manual is provided describing the apparatus, its application, experimental procedure and typical test results.