How to use the spring launcher speed calculator
Find how fast a projectile leaves a spring launcher when the spring is compressed. Enter spring constant, compression, projectile mass in the fields above; the launch speed are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “spring gun speed”, “catapult launch speed”, “toy launcher velocity”, “calculate spring launcher speed”, “find launch speed”.
Formula
Variables
- k — Spring constant (N/m)
- dx — Compression (m)
- m — Projectile mass (kg)
Worked example
With spring constant = 500 N/m, compression = 0.05 m, projectile mass = 0.02 kg, the calculator gives launch speed ≈ 7.905694 m/s; launch speed ≈ 28.4605 km/h.
Frequently asked questions
What is the spring launcher speed calculator used for?
Find how fast a projectile leaves a spring launcher when the spring is compressed. It helps with questions such as “spring gun speed”, “catapult launch speed”, “toy launcher velocity”.
What is the formula for the spring launcher speed calculation?
Launch speed (m/s) = dx × √(k / m). Launch speed (km/h) = [Launch speed] × 3.6. Here k is spring constant (N/m), dx is compression (m), m is projectile mass (kg).
What inputs do I need for the spring launcher speed calculator?
You need spring constant in N/m, compression in m, projectile mass in kg. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the spring launcher speed calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the spring launcher speed result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.