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What are solid solid contact forces?
Hi,
Basically I need to know how to distinguish between solid solid contact fores involving tangential forces and perpendicular forces.
I know it sounds complicated so any suggestions would be very helpful
=)
If the angle theta between two vectors (like a force and a turn radius or a weight and a surface plane vector) = 90 deg in the plane defined by the two vectors, then that is perpendicular. That is also tangential, when the angle is 90 degrees.
However we typically reserve the term "tangential" to vectors perpendicular to some curve's radius of turn and the term "perpendicular" to vectors pointing straight into or out of a plane. Even so, the angle theta is 90 degrees for either one.
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