Extension Springs Short - 19mm Diameter

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 19mm. Compressed length (excluding end loops) 20mm. Spring constant is approx. 15 N/m. Pack size 100

Q = What is the spring constant of these springs?
A = The spring constant is approx. 15 N/m.

 This was calculated as:
 Spring constant: k = F/x
 Where:
 F = Force in Newtons, i.e. mass in kg x ‘g’ (9.81)
 k = Spring constant (N/m)
 x = Distance or amount spring has been stretched (final length minus starting length) in metres