BF2S Forums Here's one for you physi-fags.

DrunkFace wrote:

Why are people bringing weight into the equations?

G is a measure of acceleration not a measure of force.

Yeah, but weight would have to come into it as well, 'cause the decelelation would depend on how much mass was being slowed down.


If a truck and a bike have the same stopping power, the truck will take longer to stop because it has more mass.

DrunkFace wrote:

Yes, but if they both stop from the same speed in the same time they both experience the same G.

Sirschloppy wrote:

the truck will take longer to stop

Same time? No. I don't even do physics and never had. That seems a bit obvious that if they don't stop in teh same time then the g's experienced will be different.

Obviously there's no brakes. But weight would be a factor.

You'll need to know the diameter of the thing to figure that out, and obviously the moment of inertia further out is greater.

argo4 wrote:

are we talking about internal forces on the spinning drive or an external force on the whole "box" , as when you're throwing it for example?
cause then T=Iw where I is moment of inertia, w is angular acceleration and T is torque.

throwing

SirSchloppy wrote:

Obviously there's no brakes. But weight would be a factor.

OMG its like arguing about santa with 5 year olds.

WEIGHT HAS NO EFFECT ON ACCELERATION.

If I drop a 1 kg ball and a 10kg ball they experience the SAME G, the force of the 10kg ball will be more, but the acceleration is the same.

argo4 wrote:

haffeysucks wrote:

argo4 wrote:

are we talking about internal forces on the spinning drive or an external force on the whole "box" , as when you're throwing it for example?
cause then T=Iw where I is moment of inertia, w is angular acceleration and T is torque.

throwing

ok then, i mean why would you do that but whatever. then my previous answer stands

But you'd be wrong, Mass does not effect the acceleration only the force.

argo4 wrote:

DrunkFace wrote:

SirSchloppy wrote:

Obviously there's no brakes. But weight would be a factor.

OMG its like arguing about santa with 5 year olds.

WEIGHT HAS NO EFFECT ON ACCELERATION.

If I drop a 1 kg ball and a 10kg ball they experience the SAME G, the force of the 10kg ball will be more, but the acceleration is the same.

argo4 wrote:

ok then, i mean why would you do that but whatever. then my previous answer stands

But you'd be wrong, Mass does not effect the acceleration only the force.

Read up
http://images.bestwebbuys.com/muze/book … 735486.jpg

It's the plane on a treadmill all over again, so many people too stupid, stubborn and ignorant who have no idea what they are on about yet think they do.

Go through your book and find me the definition of acceleration which includes mass. Then tell me why you converted G to newtons without a weight and then converted the newtons back to acceleration with weight.

Even your own equation f=ma proves me right.

Force =  Mass * Acceleration

G= 9.8m/s² it is an acceleration constant to the earth.

F = mg is the force of gravity on an object.

Last edited by DrunkFace (2008-12-23 21:41:25)