Euler Force
In classical mechanics, the Euler acceleration (named for Leonhard Euler), also known as azimuthal acceleration or transverse acceleration is an acceleration that appears when a non-uniformly rotating reference frame is used for analysis of motion and there is variation in the angular velocity of the reference frame's axis. This article is restricted to a frame of reference that rotates about a fixed axis.
The Euler force is a fictitious force on a body that is related to the Euler acceleration by F = ma, where a is the Euler acceleration and m is the mass of the body.
Read more about this topic: Rotating Reference Frame
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“The conduct of God who disposes all things kindly, is to put religion into the mind by reason, and into the heart by grace. But to attempt to put it into the mind and heart by force and threats is not to put religion there, but terror.”
—Blaise Pascal (1623–1662)