haruspex's latest activity

I played with a simple one dimensional model. Scenario 1: Particles on a line have a uniform velocity distribution from ##-V## to...

Is it that clear cut? For a pair of contra-rotating discs there is a frame which minimises the KE but it is still substantial, and most...

Leaving aside that not all internal energy is thermal, I assume that is in response to inaccuracies you see in the OP's view, namely...

Is that the exact wording of the question? I ask because in scientific usage "heat" only refers to the transfer of energy between...

Afterthought… I was unconsciously assuming the shelf would be relatively stiff. With a relatively flexible shelf, the principal load...

That would be true if the shelf were correspondingly shorter, so that the length of contact were the same. Even then, it’s not a...

It is not clear to me. What step breaks if it is not constant wrt time?

I am not sure how to read that. Are you saying that when accelerating as fast as you could you could not prevent the front wheel...

Professional cyclists achieve astonishing acceleration but don’t flip over backwards. It would seem perverse to try to do the lift...

I don’t get how you can do that without first pushing down on them in order to give the body the necessary posture and or angular momentum.

Does that mean they push down on the handlebars while the front wheel is still grounded, throwing the body up and back, so that they can...

Taking the wheelbase as 2L, mass centre at midpoint, and assuming it can only rotate through a small angle before the rear wheel becomes...

My guess is that is not the ideal. Seems better to spread the vertical impulse by landing the wheels one at a time.

No, that's a Megajoule. A Gigajoule has nine zeroes. But the 275kWh is correct (well, 278).

Ok, but the force at point O due to the suspended weight is W, as you had it in post #98. The error there is that, since the horizontal...