Ice Skating Blade Pressure Calculator
Estimate the contact pressure under a figure-skating blade from the skater's weight and blade length, assuming a 0.5 mm effective blade width.
How to Use the Ice Skating Blade Pressure Calculator
- Enter skater weight in kilograms.
- Enter blade length in centimetres.
- Click Calculate to see contact pressure.
使用场景
- •Physics education.
- •Figure-skating equipment discussion.
- •Materials science problem sets.
公式
P = weight_kg × 9.81 / (blade_length_mm × 0.001 × 0.5). Figure-skate blades typically have a 7–9 ft rocker radius.
常见问题
Why 0.5 mm blade width?
Sharp hollow edges contact the ice on a knife-edge — ~0.3–0.8 mm effective width. Softer surfaces and dull blades increase the width and drop the pressure.
Does this explain why ice is slippery?
Partly. The "pressure melting" story alone is insufficient — modern physics attributes slipperiness mostly to a pre-existing surface liquid layer plus frictional heating.