Mechanical Hysteresis

Item Code: P2120300

The relationship between torque and angle of rotation is determined when metal bars are twisted. The hysteresis curve is recorded.




  • Beyond Hooke's law
  • Hysteresis – mostly known from the field of magnetism – can be experienced in mechanics
  • Learn the meaning of the words stress, relaxation and equilibrium in a physics context
  • Various torsion rods out of different material and with several diameters included

  • Record the hysteresis curve of steel and copper rods.
  • Record the stress-relaxation curve with various relaxation times of different materials.

  • Mechanical hysteresis
  • Elasticity
  • Plasticity
  • Relaxation
  • Torsion modulus
  • Plastic flow
  • Torque
  • Hooke's law
  • Torsion apparatus
  • Torsion rod, steel, l = 500 mm, d = 2 mm
  • Torsion rod, Al, l = 500 mm, d = 2 mm
  • Torsion rod, Al, l = 400 mm, d = 2 mm
  • Torsion rod, Al, l = 300 mm, d = 2 mm
  • Torsion rod, Al, l = 500 mm, d = 3 mm
  • Torsion rod, Al, l = 500 mm, d = 4 mm
  • Torsion rod, brass, l = 500 mm, d = 2 mm
  • Torsion rod, Cu, l = 500 mm, d = 2 mm
  • Spring balance,transparent, 1 N
  • Spring balance,transparent, 2 N
  • Digital stopwatch, 24 h, 1/100 s and 1 s
  • Support base DEMO
  • Support rod, stainless steel, different lenghts | Length: 250 mm
  • Support rod, stainless steel, different lenghts | Length: 750 mm
  • Right angle boss-head clamp
  • Right angle clamp expert with fulcrum screw