Centrifugal Force Calculator
Calculate the outward apparent force in a uniformly rotating frame for an object fixed in that frame.
Formula
Fcf = mv²/r = mω²r; v = ωr.
Mass: 2 kg · Frame tangential speed at object: 3 m/s · Distance from axis: 1 m · Outward apparent force ≈ (2 kg)×(3 m/s)^2÷(1 m)
How to use
- Enter mass and the tangential speed of the rotating frame at the object.
- Enter the object’s distance from the rotation axis.
- Read the outward apparent force magnitude.
Examples
- 2 kg co-rotating at 3 m/s at radius 1 m has apparent force 18 N outward.
Frequently asked questions
Is this a real interaction force?
It is an inertial force used in a rotating frame, not an additional interaction in an inertial frame.
Why match centripetal force in size?
For an object fixed in the rotating frame, it balances the inward net real force.
What if the object moves within the frame?
Other inertial terms, such as Coriolis force, may be needed; they are not included.
Sources
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