Hello everyone, I'm having a little problem calculating the mass of a rotating object. I mix in all formulas. Basically, I have an object rotating on an axis, and this object is held by a screw (I'm simplifying). My object weighs 0.551 kg, it rotates on a Ø0.26 m, and at a speed of 26.6 rpm (21.7 m/s if I'm not mistaken because peripheral = 0.816m). I used the formula F = (mv)/r. m = mass v = speed r = radius

This gives me 92 kg of traction on the screw. Can you confirm if the reasoning is good? It seems huge to me.

If " the screw is in tension ", the assembly looks like this?

If so, the expression for the dynamic resultant Rd (" centrifugal force") is as follows:

Mass M in kg (0.55), radius r in m (0.13), w to rad/s (167.1)

Which, unless there is a calculation error, would give Rd = 2001 N... The screw is important, but so is the dynamic balancing of the rotating assembly. It's going to shake...

@m.blt ... You also find it difficult to find a good working postulate without having a small schematic diagram of rotating objects?.. @Jean-miii : A small scribble would be appreciated.