Force Calculator

Calculate net force in a chosen direction from constant mass and signed acceleration.

Net force along the chosen direction20.0000 N
kg

0 – 1000000000000000

m/s²

-1000000000 – 1000000000000000

Net force along the chosen direction

20.0000 N

    This is the resultant force needed for the entered acceleration in an inertial frame. Individual applied forces, friction and weight may combine to give that net force.

    How this was calculated

    Newton’s second law for constant mass: F = ma.

    Formula and method

    Newton’s second law is F = ma for constant mass in an inertial frame.

    Worked example

    A 10 kg mass accelerating at 2 m/s² requires a net force of 20 N along that direction.

    Frequently asked questions

    Is this the same as one applied force?

    Not necessarily. Applied force, friction, gravity and other forces combine to give the net force used in this equation.

    Last updated . Results are estimates for informational purposes only.