Objective: Determination of torsional coefficients and shear modulus
In order for solid bodies to be deformed, an external force needs to be applied. This acts against the body’s own resistance to deformation, which is dependent on the material from which the body is made, as well as its geometry and the direction of the applied force. The deformation is reversible and proportional to the applied force as long as that force is not too great. One example which is often investigated is torsion applied to a uniform cylindrical rod which is fixed at one end. The resistance of the rod to deformation can be numerically analysed and determined by building a set-up which is capable of oscillating involving the rod itself and a pendulum disc and then measuring the period of the oscillation.
![Experiment: Torsion on Cylindrical Rods (230 V, 50/60 Hz), 8000759 [UE1090300-230], Deformation of solid bodies](/imagelibrary/UE1090300-230/UE1090300-230_01_Experiment-Torsion-on-Cylindrical-Rods-230-V-5060-Hz.jpg)
![Photo Gate, 1000563 [U11365], Sensors for Physics](/thumblibrary/U11365/U11365_01_140_140_Photo-Gate.jpg)
![Digital Counter (230 V, 50/60 Hz), 1001033 [U8533341-230], Measurement of Time](/thumblibrary/U8533341-230/U8533341-230_01_140_140_Digital-Counter-230-V-5060-Hz.jpg)
![Pocket Measuring Tape, 2 m, 1002603 [U10073], Accessory - Measurement of Length](/thumblibrary/U10073/U10073_01_140_140_Pocket-Measuring-Tape-2-m.jpg)
![Clamp with Hook, 1002828 [U13252], Clamps](/thumblibrary/U13252/U13252_01_140_140_Clamp-with-Hook.jpg)
![Tripod Stand 150 mm, 1002835 [U13270], Bases](/thumblibrary/U13270/U13270_01_140_140_Tripod-Stand-150-mm.jpg)
![Pair of Safety Experiment Leads, 75 cm, blue, red, 1017718 [U13816], Experiment Leads and Cables](/thumblibrary/U13816/U13816_01_140_140_Pair-of-Safety-Experiment-Leads-75-cm-blue-red.jpg)
![Stainless Steel Rod 1000 mm, 1002936 [U15004], Rods](/thumblibrary/U15004/U15004_01_140_140_Stainless-Steel-Rod-1000-mm.jpg)
![External Micrometer, 1002600 [U10070], Accessory - Measurement of Length](/thumblibrary/U10070/U10070_01_140_140_External-Micrometer.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![Set of Helical Springs for Hooke‘s Law, 1003376 [U40816], Coil Springs](/thumblibrary/U40816/U40816_01_140_140_Set-of-Helical-Springs-for-Hooke-s-Law.jpg)
![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
![Set of Slotted Weights, 20-100 g, 1003226 [U30030], Balance Weights](/thumblibrary/U30030/U30030_01_140_140_Set-of-Slotted-Weights-20-100-g.jpg)
![Vertical Ruler, 1 m, 1000743 [U8401560], Accessory - Measurement of Length](/thumblibrary/U8401560/U8401560_01_140_140_Vertical-Ruler-1-m.jpg)
![Set of Riders for Rulers, 1006494 [U8401570], Accessory - Measurement of Length](/thumblibrary/U8401570/U8401570_01_140_140_Set-of-Riders-for-Rulers.jpg)
![Apparatus for Measuring Young’s Modulus, 1018527 [U8557260], Elastic Deformation](/thumblibrary/U8557260/U8557260_01_140_140_Apparatus-for-Measuring-Young-s-Modulus.jpg)
![Young’s Modulus Supplementary Set, 1018528 [U8557270], Elastic Deformation](/thumblibrary/U8557270/U8557270_01_140_140_Young-s-Modulus-Supplementary-Set.jpg)
![Torsion Apparatus -
torsion and shear modulus, 1018550 [U8557300], Torsion Apparatus](/thumblibrary/U8557300/U8557300_01_140_140_Torsion-Apparatus-torsion-and-shear-modulus.jpg)
![Supplementary Set for Torsion Apparatus, 1018787 [U8557430], Torsion Apparatus](/thumblibrary/U8557430/U8557430_01_140_140_Supplementary-Set-for-Torsion-Apparatus.jpg)
![Experiment: Hooke's Law, Basic equipment, 8000747 [UE1020100], Forces](/thumblibrary/UE1020100/UE1020100_01_140_140_Experiment-Hookes-Law-Basic-equipment.jpg)
![Stainless Steel Rod 470 mm, 1002934 [U15002], Rods](/thumblibrary/U15002/U15002_01_140_140_Stainless-Steel-Rod-470-mm.jpg)