Breckland Scientific 2021 Catalogue

Springs

Springs

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1 EXTENSION SPRINGS - SHORT Ideal for demonstrating Hooke’s Law, these springs have loops at each end and can accept up to 600g without the spring deforming. Spring diameter 16mm. Compressed length (excluding end loops) 20mm. Spring constant is approx. 25 N/m. Cat No. Description Price Per SPR-300-100 Extension Spring - Short -16mm Diameter 10.82 100pk SPR-300-150 Extension Springs Short - 19mm Diameter 12.56 100pk 2 EXTENSION SPRINGS - LONG Suitable for oscillations, SHM etc. Loops at each end. Length: 100mm x 6mm. Cat No. Description Price Per SPR-250-100 Extension Spring - Long 9.17 10 3 EXTENSION SPRING - EXTRA LONG This extra long spring is useful for demonstrating transverse and longitudinal waves, reflection of pulses, standing waves, etc. Closed length 3 metres, extended length about 10 metres. Diameter : 14 mm. Cat No. Description Price Per SPR-270-100 Extension Spring - Extra Long 16.28 ea. 4 SLINKY SPRINGS A Slinky-type spring for wave demonstration. Cat No. Description Dia. Closed Length Price Per

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Extension Springs - Short

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Extension Springs - Long

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SWA-400-100 Slinky Spring 50mm 75mm

4.72 ea.

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SWA-400-150 Slinky Spring 75mm 100mm

6.55 ea.

SWA-400-200 Slinky Spring 70mm 165mm

7.77 ea.

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5 HOOKE’S LAW SPRING SET Set of five springs, each with a different spring constant, for in-depth investigations of Hooke’s law experiments. Springs range from 8 to 10 mm diameter and 58 to 66 mm length (including end loops). The five spring constants and corresponding weight limits are:

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10g/cm & 100g 20g/cm & 225g 50g/cm & 550g 100g/cm & 1100g 200g/cm & 2200g Cat No.

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Extension Springs - Extra Long

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SPR-350-050 Hooke’s Law Spring Set

3.09 5

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6 TWO-WAY MEMORY SPRING These remarkable springs, based on a brass alloy, ‘remember’ to open up at around 90°C and close again when cool. If immersed in hot water at or around 90°C they will open in a split second and close as quickly if dropped in cold water. Cat No. Description Price Per SMS-350-100 Two-Way Memory Spring 3.56 ea. 7 SMART SPRING A 5mm dia. x 12mm (when closed) spring made from shape memory alloy. At room temperature this spring is soft enough to pull out to approximately 50mm by applying a small force. When heated to 70°C by passing an electric current through it, the spring contracts to its original length with a useful pulling force (equivalent to lifting a 0.5kg weight). Cat No. Description Price Per SMS-150-100 Smart Spring 7.08 ea.

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Slinky Spring

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Hookes Law Spring Set

Two-Way Memory Springs

Smart Springs

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