There's Some Really Stupid People Out There

[loose nut]

Would flip flops with steel shanks and toes pass a safety inspection???

[Arcane]

???????????????

Relative to the ground, sure, but angular velocity is constant.

The single point on a rotating tire's tread surface follows a cycloid path. There's a constantly changing relationship between that point and the axis of the wheel. When that single point is on the ground, it's the axle that's rotating about that point for a very small time frame.

https://www.animations.physics.unsw.edu.au/jw/rolling.htm

[DR]

I kinda figured the gas in truck bed was fake...... Filling a truck bed with water is a common way to make a quick pool for the kids though.

Anybody remember Candid Camera on TV where they did tricky things to surprise onlookers? Not dangerous things, more like the VW bug they put in a 50 gallons gas tank and told the gas station guy to fill it up.

[Ridgerunner]

I kinda figured the gas in truck bed was fake...... Filling a truck bed with water is a common way to make a quick pool for the kids though.

Anybody remember Candid Camera on TV where they did tricky things to surprise onlookers? Not dangerous things, more like the VW bug they put in a 50 gallons gas tank and told the gas station guy to fill it up.

I liked the one where they had a car with no motor. Had this lady get behind the wheel and gave it a big push down the road. She pulled in a service station and asked them to check the oil because she heard a noise under the hood lol.

[Arcane]

I suspect this might be a put on but maybe it's real. Funny as all get out if it's real.

[Willy]

.................................................. ....
What's with the mud flaps in front of the tires?

........................................

Stones can of course come out in all directions however most will come out towards the rear, the rest will come out randomly depending on how well they have embedded themselves into the tire's tread.
Centrifugal force from the tire's speed is a large factor of course, however an even bigger factor will be tire's tread deformation, or flex if you will. Having seen high speed camera studies of this phenomenon it is amazing to see how much the loading and unloading on the tire's contact patch influences the distortion that takes place on the entire periphery of a tire and it's tread as it goes through this loading and unloading cycle.

In my experience of over 40 years of professional driving, a very large percentage off highway. I have not personally witnessed any damage to the truck from a stone thrown forward from a steering axle tire. Not to say it can't happen or that it hasn't happened.

I believe the reason mudflaps are mounted in front of the steering axle's tires is to prevent muddy water being thrown forward and then landing on the headlights. A few cycles of that and the headlights soon grow very dim. Having driven trucks both with and without mudflaps ahead of the front axle I can say it does make a huge difference.
Probably why you see them more on trucks that regularly see off highway service vs highway only trucks.

[Michael Edwards]

I suspect this might be a put on but maybe it's real. Funny as all get out if it's real.

Yup, that prank has been done to death.

[J Tiers]

The single point on a rotating tire's tread surface follows a cycloid path. There's a constantly changing relationship between that point and the axis of the wheel. When that single point is on the ground, it's the axle that's rotating about that point for a very small time frame.

https://www.animations.physics.unsw....jw/rolling.htm

That is highly dependent on the frame of reference.

But, the wheel does not stop, it is continuously rotating around its axle. The presence or absence of the road does not change that. The centrifugal force on a particle on the outside of the wheel is not changed by the presence or absence of the road.

If the wheel is lifted off the surface by other wheels on a vehicle hitting a bump, does that alter the rotation? Not at all.