100 grizzly bear vs a m1a1 abrams(not shooting)

[Hasha 2]

Ok, here is the situation, a bored US tanker stole a mama grizzly's cub and took it into an Abrams to cuddle it.

Mama and papa bear are furious and called 98 other bears to attack the guy who took the cub. BUT: he is in the M1A1 with hatch closed. Ok, the M1A1 does not shoot at the bears, SO, will 100 bears overpower the abram? Such as overturning it, chewing the track to break it, scratch it or opening the hatch to dig that guy out? (  Bears are smart)

What do you think?

Ok, another scenario, but the M1A1 abrams is now an apache or a Mi-24 hind. Who will win?

[Cloney 0]

If there was a momma and a papa bear and they called 100 other bears, wouldn't that mean that there are 102 bears? And if those two parent bears are considered non combatants, by ROE they aren't allowed to claw the tank... Nevermind I'm getting too technical.

[Tovarish 0]

The moose wins (stealth is everything, I bet none of you noticed him before now)

[nordin dk 0]

Good one Tovarish

[Sadico 1]

The abrams would run over the bears, most likely.

[Guest]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Tovarish @ May 11 2002,22:55)</td></tr><tr><td id="QUOTE">The moose wins (stealth is everything, I bet none of you noticed him before now)<span id='postcolor'>

[Hasha 2]

OK, the chopper and the tanks are NOT SHOOTING AND MOVING! Will the BEARS OVERPOWer THEM>>??

[Warin 0]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">OK, the chopper and the tanks are NOT SHOOTING AND MOVING! Will the BEARS OVERPOWer THEM>>??<span id='postcolor'>

Jeeze, picky aintcha??

The tank, no hope in hell...ever. Bears claws work great on wood, people, tents, etc... but against the kind of armour plating on an MBT, not likely!

A chopper..well..a civilian one maybe. But I suspect that a military chopper will be beefed up enough that the bears will also lose.

[Hasha 2]

how about flipping the vehicles.

saw bears flip cars before on TV and crash through the glass.

Can't the bear paw the heli glass or ram it and break it and pull the joker who stole the cub out?

[Sadico 1]

They might be strong enough to move the chopper, but the abrams... Well, all of'em could move the abrams, if they can all get near it and grab it.

[Grey Fox 0]

Can that many bears realistically lift 60 tons?

[Sadico 1]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Can that many bears realistically lift 60 tons?<span id='postcolor'>

If a bear can lift a car, then 100 bears maybe can lift 60 tons. But i don't think 100 bears can grip the abrams at the same time and lift it.

[Tex -USMC- 0]

The tank and the tanker would be safe. Their pickenic baskets would be in grave danger on the other hand

I would like to submit that this topic is idiotic, because bears are for the most part solitary creatures, and if you show me an area with 60 bears living in it that can respond within about half a day to a call for help, I will show you an ecological wasteland

[Tovarish 0]

*AHEM* The moose won! End of discussion!

[Guest]

Let's say that an average bear has a radius of 1,5 m. The Abrams has a circumference of 27 m. That makes it thoretically possible for 18 bears to push at the same time. The Abrams weighs 69 tons. That means that each bear must be able to lift about 4 tons to lift the tank straight up.

If they instad do so that the bears on one side push down the tank while the other half on the other side are pushing it up (in an attempt to overturn the tank) we have some different figuers. To overturn it they must angle it over pi/2 (90 degrees). The distance (arc lenght) they have to lift it is then pi*radius. The radius (the width of the abrams) is 3.7 m. So , the energy required is a force -m*g*(lenght of arc). On the other hand we have that the force applied F = [F0*cos(a), F0*sin(a) - m*g]. To get the energy we integrate that on the arc. To simplify the calculations we convert this to polar coordinates. We know that the energy is the integral(dotproduct(F,dS)) where dS = [dx,dy]. A conversion gives us

F0*r*cos^2(a) + F0*r*sin^2(a) - mg*r*sin(a). Now we integrate this over r (0..radius) and a (0..pi/2)

The result is that the force required is 1.16 * 10^7 N. That is 11,6 million Newtons during the lift. For the arc it is the equivalent of about 134 million joules. If we say that they can use their full strenght for 30 seconds this translates to a power of 4.4 MW = 6020 hp (horse powers).

That would be 669 horse powers per bear, and IMO that is too much.

Well enough for this physics lesson for today

Edit: Fixet misc fatal errors

[Warin 0]

LOL. Bear Physics 101.

Though I suspect you need some unkown variable to translate the amount of usable work that each bear can actually do. Considering bear physiology, I doubt 100 percent of it's output power could be converted to lifting and pulling, making the energy requirements much higher.

[ralphwiggum 6]

Denoir, did you put in consideration for torque? as soon as M1A1 reaches ceratin point, the tank would fall by itself. you assumed at 45 degrees, but could it be that more angle is needed to turn Abrams?

[Guest]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (RalphWiggum @ May 12 2002,04:31)</td></tr><tr><td id="QUOTE">Denoir, did you put in consideration for torque? as soon as M1A1 reaches ceratin point, the tank would fall by itself. you assumed at 45 degrees, but could it be that more angle is needed to turn Abrams? <span id='postcolor'>

Yepp, torque was included. I assumed a maximum angle of 90 degrees. By integrating the force along the arc, I don't have to do any more calculations. Torque and so on is implicitly included in the integration path.

Edit: Ah. shit.. I see that I made a mistake now, I integrated only to 45 degrees (pi/4) instead to 90 degrees (pi/2). I also had an integration term wrong.. fixed now. Thanx

[Tovarish 0]

The 100 bears would piss on the tank, and the owerpowering stench would kill the crew

[SKULLS_Viper 0]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Tovarish @ May 12 2002,05:47)</td></tr><tr><td id="QUOTE">The 100 bears would piss on the tank, and the owerpowering stench would kill the crew

<span id='postcolor'>

Hahahahaha!

Oh how bout the baby bear INSIDE the tank, what happens if the baby bear is really a midget grown bear?With full strength of an adult bear, i dont really want to find out, probley worse then a sabot round sending molten armor at the crew.

[SKULLS_Viper 0]

Oh is the M1A1's engine on or off?If it is on, the bears are going to get BBQ, if they get near.The engine reaches about 1400F, thats 40x more powerful then my stove.Any one for some...BBQ Bear? All though if they are smart, maybe they could find some other way.

[Hasha 2]

The are off,

I dun think the engine will BBQ them or human who gets near it will be BBQed too!

[Antichrist 0]

I reckon 20 bears should be enough to push Abrams into nearest river or lake where it will drown

[USSoldier11B 0]

Where is the rest of the tank crew?

Commander: "Gunner, sabot, Bear!"

Gunner: "Identifed"

Commander: "Fire, fire HEAT"

Gunner: "On the way!"

Commander: "Target, driver move out."

[christophercles 0]

Can the tanker move the turret? because if he could, he could smack the bears in the head.