How to use the newton's second law calculator
Calculate the net force on an object from its mass and acceleration. Enter mass, acceleration in the fields above; the net force, force in pound-force are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- m — Mass (kg)
- a — Acceleration (m/s²)
Worked example
With mass = 10 kg, acceleration = 9.8 m/s², the calculator gives net force ≈ 98 N; force in pound-force ≈ 22.03128 lbf.
Frequently asked questions
What is the formula for the newton's second law calculation?
Net force (N) = m × a. Force in pound-force (lbf) = [Net force] / 4.4482216. Here m is mass (kg), a is acceleration (m/s²).
What inputs do I need for the newton's second law (f = ma) calculator?
You need mass in kg, acceleration in m/s². 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 this 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 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.