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  (#1)
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mandymae's Avatar
 
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April 22, 2003, 07:50 AM

This is for an Accord but it was apparently filmed in one take - kind of cool. And I don't have a Honda - in case anyone was wondering.

http://home.attbi.com/~bernhard36/honda-ad.html
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  (#2)
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April 22, 2003, 08:52 AM

What's with the tires? rolling up hill? Not enough momentum for that? especially that third one that starts back down after transferring it's energy to the fourth, and then starts up again?:dunno: I must be missing something. Pretty cool though!!!
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  (#3)
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April 22, 2003, 09:20 AM

Yeah - I thought that part was a little suspect myself. I suppose this is one of those times you're supposed to suspend disbelief.

[Edited on 22/4/2003 by mandymae]
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April 22, 2003, 09:31 AM

Quote:
What's with the tires? rolling up hill? Not enough momentum for that?
I read something about that... something like putting a lot of weight in the wheel towards the top and then balancing them. If nudged forward, the weight has enough downward momentum to roll the wheel uphill slightly? I'm no physics major, maybe the Honda engineers have too much free time.


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April 22, 2003, 10:16 AM

Quote:
Quote:
What's with the tires? rolling up hill? Not enough momentum for that?
I read something about that... something like putting a lot of weight in the wheel towards the top and then balancing them. If nudged forward, the weight has enough downward momentum to roll the wheel uphill slightly? I'm no physics major, maybe the Honda engineers have too much free time.


But thats why they get the big $$$$$. They need to share the wealth with me.


Ride Hard or Put it Away. Trickn is life.
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April 22, 2003, 10:42 AM

Quote:
Quote:
What's with the tires? rolling up hill? Not enough momentum for that?
I read something about that... something like putting a lot of weight in the wheel towards the top and then balancing them. If nudged forward, the weight has enough downward momentum to roll the wheel uphill slightly? I'm no physics major, maybe the Honda engineers have too much free time.
Yeah, you're right. It does make sense, and when you watch them accelerate it makes sense that they have extra weight that must be balanced at the top and a little to the right to make them stay on the ramp. You can tell when the weight gets to the bottom, as the wheels basically stop, and the weight keeps them from rolling back down (not enough force from gravity to rotate the extra weight back around).

I knew those Honda guys were smart!!
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  (#7)
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April 22, 2003, 10:45 AM

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What's with the tires? rolling up hill? Not enough momentum for that? especially that third one that starts back down after transferring it's energy to the fourth, and then starts up again?:dunno: I must be missing something. Pretty cool though!!!
The entire ad is about balance and the interaction between mass, friction and gravity based upon stable, unstable, and neutral equilibria. What the wheels/tires are doing is a perfect example of centripetal acceleration.

And now that I've totally established myself as a fuking dork, I'm going to go back to my slide rule and pocket protector and not post anything more.
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April 22, 2003, 11:01 AM

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HOLY WOODY!!! What did he just say? :dunno:
I'll break it down.

The direction of the centripital acceleration is always inwards along the radius vector of the circular motion, and the magnitude of the centripetal acceleration is related to the tangential speed and angular velocity.

An object moving in a circle experiences both angular acceleration and centripetal accelaration. Since the two are always perpendicular, by definition, the magnitude of the net acceleration "a"a total is:

a(total) = sqrt(a(c)^2 + a(t)^2 = sqrt(r^2w^4 + r^2)




Or, basically, if you put a weight on the top of a wheel, the motherfuker will roll uphill.

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April 22, 2003, 11:17 AM

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Dude, I hate you. After the teasers yesterday, I thought I could hang.... :laugh:
LOL. Nah, I'm really not that much of a nerd. Physics and math are fun, but I can't seem to remember my phone number. Or address. Or birthday.

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April 22, 2003, 01:01 PM

Being the daughter of an engineer I had to look into this further. On a Physics' Department website I found this explanation for rolling an object uphill:

"Because of the positioning of the rolling object on the track, the centre of mass of the rolling object is lower at the top of the track than at the bottom, and so the object rolls uphill."

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April 22, 2003, 01:18 PM

It's okay to be jealous that you didn't take it upon yourself to research the physical explanation for this phenomena. That's why I'm here.



(only kidding)
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April 22, 2003, 02:21 PM

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It's okay to be jealous that you didn't take it upon yourself to research the physical explanation for this phenomena. That's why I'm here.
What, like my comments weren't good enough? I backed mine up with obscure formulas and technical terms like "stuff". You had to go and make it so people could actually understand it!!!! What's the mystery and fun in that?
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April 22, 2003, 04:00 PM

The mystery was the math that you used - guess my calculus is a bit rusty.

Next time I'll let you explain the facts of life - promise.
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April 22, 2003, 04:12 PM

Let this be a lesson to all of you non-Honda people.... WE CAN ROLE SH!OT UP HILL!


Johnny AKA JStew
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April 22, 2003, 04:23 PM

Nice try Johnny - the commercial was far a car not a bike. And didn't you say that you drive a Lincoln?

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