Force Calculator

Calculate force, mass, or acceleration using Newton's Second Law (F = ma). Enter any two values to solve for the third. Includes force reference table.

Force

50.0000 N

Mass

10.0000 kg

Acceleration

5.0000 m/s²

Newton's Second Law: F = ma

The net force acting on an object equals its mass times its acceleration. A larger force means greater acceleration, and a larger mass means less acceleration for the same force. For example, pushing a bicycle vs a car with the same force — the bicycle accelerates much faster because it has less mass.

Common Forces Reference

ForceEveryday Equivalent
1 NRaising a 100g apple
10 NLifting a 1kg water bottle
100 NPushing a heavy shopping cart
500 NLifting a 50kg person
1,000 NSmall car engine thrust
10,000 NCar collision impact force

Frequently Asked Questions

What is Newton's Second Law?
Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. The formula is F = ma, where F is force in newtons, m is mass in kilograms, and a is acceleration in meters per second squared. This is the most fundamental equation in classical mechanics.
How much force is 1 newton?
One newton (N) is the force needed to accelerate a 1-kilogram mass at 1 meter per second squared. In everyday terms, 1 N is approximately the force of gravity on a small apple (about 100g). A typical handshake exerts about 10-20 N, while the force of a car collision can be tens of thousands of newtons.
What is the difference between mass and weight?
Mass is the amount of matter in an object, measured in kilograms. Weight is the force of gravity acting on that mass, measured in newtons. Weight = mass × gravitational acceleration. On Earth, a 70 kg person weighs about 687 N (70 × 9.81). On the Moon, the same person weighs only about 113 N, but their mass remains 70 kg.

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