Newton's Second Law: Force, mass and acceleration — the heart of dynamics. This free calculator solves for Force, mass, acceleration, weight and shows every step.
The net force on an object equals its mass times its acceleration, in the same direction. It is the quantitative heart of mechanics and is fully vector — components add independently. Weight is simply F = ma with a = g.
m = 10 kg, a = 3 m/s². F = 10·3 = 30 N. That same 10 kg weighs 10·9.81 = 98.1 N on Earth.
Structural and mechanical engineering, rocketry, automotive design, and essentially every dynamics problem in mechanics.
Newton's Second Law uses the formula F = m·a. Force, mass and acceleration — the heart of dynamics.
Choose which variable to solve for, enter the values you know (in any supported unit), and the calculator substitutes them into F = m·a and shows every step of the working. It can solve for Force, mass, acceleration, weight.
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