On 10/08/2020 15:55, TMS320 wrote:
On 10/08/2020 15:18, JNugent wrote:
On 10/08/2020 14:00, TMS320 wrote:

I have enough technical knowledge to know it's not that simple. Why
are you so ready to suck up to Nugent when he never backs up his claims?

Don't *you* support the thesis that a higher centre of gravity reduces
stability (ceteris paribus, of course)?

Sigh.

For a car or table that is stable when upright, yes, a lower CogG for a
given base allows it to tip to a greater angle before it falls over.
This is easy to calculate and demonstrate practically.

For a compound inverted pendulum (ie, a person on foot, running, on a
bike etc), it might, it might not. For the purposes of discussion we can
make it simpler and consider a simple inverted pendulum having a point
mass.

If not, why not?

You genuinely don't get it. You make a claim, it's your call.

OK, let's try to make it simpler for you. Which is likely to be better -
the rider down in a triathlon tuck or the rider on a sit up and beg?

You can even do your own experiment. Get a pen and balance it vertically
on your palm. Impossible, isn't it? Now get a broom and do the same. Try
it head up and head down. Which is easier?

That's fine and answer a question about your approach to this.

There are only two possibilities.

1. You (correctly) do recognise that a raised centre of gravity reduces
stability but for reasons of your own, daren't admit it.

2. You (quite incorrectly) don't accept that a raised centre of gravity
reduces stability.

There are no other relevant possibilities.