• This unit is designed to determine the time period of spiral spring and its frequency.
• Spiral spring is a type of spring which is formed by a metallic strip wound around a rod at same point.
• The apparatus consists of a shaft on which the spiral spring is attached.
• A metallic rod, containing masses at its edges, is used to deflect the shaft.
• The deflection can be measured through a protector and the extent to which the spring was deflected initially can also be found.
• Specification
• Investigation of vibrations on a spiral spring-rotating
• mass system
• Axis mounted on ball bearings
• 2 levers with sliding weights
• Spiral spring
• Integrated angle measuring scale mounted on axis
• Wall mounting plate made of anodised aluminium

Technical Data

Spiral spring

stiffness: c=238Nmm

cross-section: 10x1mm

effective length: approx. 800mm

inside radius: 10mm

outside radius: 50mm

Weights made of stainless steel

mass: 0.5kg

diameter: 50mm

Levers made of stainless steel

diameter: 8mm

length: 154mm

arm radius of the rotating mass: 36…150mm

Angle measuring scale

0…360°

resolution: 1°

Base plate

wxh: 200x250mm