# Reaction to gyroscopic force [duplicate]

Just like the reaction of the weight of a body is a force acting on Earth towards the body, where and in what direction does the reaction of a gyroscopic force act?

• Do you think the reaction force will be different for a gyroscope compared to another body? – Chris2807 Mar 21 '15 at 21:39
• Now you have clarified your question I think it is a duplicate of physics.stackexchange.com/q/271/26969 – Floris Mar 22 '15 at 20:25

There is no "gyroscopic force". The best you can say is that there is a "reaction torque" when you apply a torque to a gyroscope. When a torque (which is a vector $\vec\Gamma$) is applied to a gyroscope with angular momentum (also a vector $\vec L$) the resulting motion of the gyroscope is a precession - the tip of the angular momentum vector rotates along the direction of the torque vector.