Benefits

• The use of eight different rods out of different material and with several diameters increase the understanding of all correlations
• Simple experimental set-up with immediate and clear results
• Extremely solid construction

Support base DEMO

Support rod, stainless steel, l = 250 mm, d = 10 mm

Support rod, stainless steel, 750 mm

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

Stopwatch, digital, 1/100 s

Sliding weight

Right angle clamp expert

Tasks

1. Static determination of the torsion modulus of a bar.
2. Determination of the moment of inertia of the rod and weights fixed to the bar, from the vibration period.
3. Determination of the dependence of the vibration period on the length and thickness of the bars.
4. Determination of the shear modulus of steel, copper, aluminium and brass.

What you can learn about

• Shear modulus
• Angular velocity
• Torque
• Moment of inertia
• Angular restoring torque
• G-modulus
• Modulus of elasticity