Is it harder to lift 9x5lb plates than 45lb plates?

its called tork

>>36696164
torque*, but yeah, this guy is right

>>36696154
you have the same amount of weight on both sides, it cancels each other out. the center of mass is in the middle, the entire weight might as well be directly below your hands attached to the bar.

>>36696175
sometimes the retards on here make me question humanity

>>36696175
No no no I'm talking about the centre of mass of the weight plates since they aren't attached to the bar.

What would happen if I made a bar that circled the earth? Would it just float?

>>36696190
Only if you made it at the full diameter of the earth. (Like the equator or over the north and south pole)

>>36696188
plates don't float in the air. draw a diagram of whatever convoluted scenario you're picturing

You know when you try to lift something from one end, one of the major forces is the bar pushing up in your hand? When you have plates on each side, and the balance point is in the middle, the plates on each side pushes the other side up cancelling the torque effect

The centre of mass on any barbell set up properly is exactly in the middle. The further spaced out plates do slightly increase the moment of inertia though (in 2 axes).

If anything the bar is slightly more stable with the 9x5lb, since a given transient imbalance will move the bar less. The difference would be very small though.

If that's hard to understand, consider the extreme case where all the weight is in the middle of the bar. Even a small fluctuation will rotate the bar wildly and you will constantly be reacting to stabilize it. With a normal bar this still happens, but the movements are smaller and you have more time to react.

>>36696181
You're the best example of that.