I was using a concrete diamond cutting cup attached to an angle grinder at work the other day. The disk is heavy-ish (maybe a pound or two). When I turn the power on, it feels as though the thing gains 5 pounds. What is happening?
In: Physics
It’s not heavier, but it will resist rotation on any other plane. Any spinning weight causes a gyroscopic effect which in simple terms means it will want to maintain that attitude and resist rotation to another plane. This is very useful for many applications such as for example gyroscopic stabilisation and attitude control for precision machinery, targeting systems for weapons or high precision tools like telescopes or measuring/surveying equipment, or even spacecraft in space which have no surface to push against.
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