1waffle1
|
  |
| Joined: 16 Oct 2007 |
| Total Posts: 16381 |
|
|
| 21 Oct 2012 05:47 PM |
I've really never gotten it. Say I want to move a 1x1x1 brick away from me. I give it velocity in the opposite direction. If I want to move a larger brick, I simply multiply the applied velocity by the mass of the brick. The larger brick goes flying exponentially farther than the smaller brick.
So I decide not to multiply the applied velocity by the mass. The 1x1x1 brick moves the same distance. The larger brick does not move.
How does this work? |
|
|
| Report Abuse |
|
|
TaslemGuy
|
  |
| Joined: 10 Jun 2009 |
| Total Posts: 12174 |
|
|
| 21 Oct 2012 05:49 PM |
| Probably has to do with friction. You need to be more specific or we can't help. |
|
|
| Report Abuse |
|
|
1waffle1
|
  |
| Joined: 16 Oct 2007 |
| Total Posts: 16381 |
|
|
| 21 Oct 2012 05:54 PM |
Happy 12000th post.
So it has to do with friction? What is the coefficient of friction on Roblox? |
|
|
| Report Abuse |
|
|
|
| 21 Oct 2012 06:16 PM |
I believe that TalasemGuy is correct. Friction (More specifically, static friction) is responsible for the lack of movement. To demonstrate this, make two bricks, one large and one small, float (Bodyforce of (0,196.6*mass,0). Then assign equal velocities to both. They will both have moved the same distance over the same amount of time. (Give or take a bit.) On a slightly related note, static friction should probably not apply to Roblox parts, despite the status quo. If you are merely setting the velocity to a certain amount, not applying force, than the physics engine should ignore static friction, and merely apply dynamic friction.
-God Bless- |
|
|
| Report Abuse |
|
|
1waffle1
|
  |
| Joined: 16 Oct 2007 |
| Total Posts: 16381 |
|
| |
|
|
| 21 Oct 2012 06:26 PM |
I mer-ONLY said it twice.
-God Bless- |
|
|
| Report Abuse |
|
|
|
| 21 Oct 2012 06:34 PM |
"How does Velocity work?"
> implying Velocity works |
|
|
| Report Abuse |
|
|
| |
|
|
| 21 Oct 2012 07:23 PM |
Velocity works quite well as a read-only value.
-God Bless- |
|
|
| Report Abuse |
|
|
|
| 21 Oct 2012 08:22 PM |
| Really only effective with its best friends BodyForce and BodyGyro. |
|
|
| Report Abuse |
|
|
1waffle1
|
  |
| Joined: 16 Oct 2007 |
| Total Posts: 16381 |
|
|
| 21 Oct 2012 08:37 PM |
| @master do not want with hundreds of bricks |
|
|
| Report Abuse |
|
|
Merely
|
  |
| Joined: 07 Dec 2010 |
| Total Posts: 17266 |
|
|
| 21 Oct 2012 08:40 PM |
| you guys talking about me? |
|
|
| Report Abuse |
|
|
|
| 21 Oct 2012 09:07 PM |
@Merely
Why would we talk about you? You're merely Merely. |
|
|
| Report Abuse |
|
|
|
| 21 Oct 2012 11:14 PM |
F = ma
I see no velocity here. |
|
|
| Report Abuse |
|
|
|
| 21 Oct 2012 11:24 PM |
"How does Velocity work?" "Velocity work?" "work"
v = d/t
I see no joules. |
|
|
| Report Abuse |
|
|
Tonitoni
|
  |
| Joined: 14 Mar 2009 |
| Total Posts: 6429 |
|
|
| 22 Oct 2012 02:06 AM |
| Reading scripting forums amuses me, |
|
|
| Report Abuse |
|
|
|
| 22 Oct 2012 02:08 AM |
I never understand how force = mass x acceleration.
If I push a wall. That wall is not moving. I am still applying force.
NEWTON IS WRONG. |
|
|
| Report Abuse |
|
|
nate890
|
  |
| Joined: 22 Nov 2008 |
| Total Posts: 21686 |
|
|
| 22 Oct 2012 03:12 AM |
| Assuming that the friction theory is correct, play with the Friction property of BasePart and see what happens... :o |
|
|
| Report Abuse |
|
|
Garnished
|
  |
| Joined: 09 Apr 2012 |
| Total Posts: 12695 |
|
|
| 22 Oct 2012 10:34 AM |
simple description
if u haz velocity on 0, you dunt moove if u change it to -6 you move backwards if u change it to 6 you move forward it's basically the friction power |
|
|
| Report Abuse |
|
|
HotThoth
|
  |
 |
| Joined: 24 Aug 2010 |
| Total Posts: 1176 |
|
|
| 22 Oct 2012 12:12 PM |
@Prehistoric: that's because the wall pushes back :P. @Others: You need more force to push a bigger block, but not more velocity. Velocity is just speed in a particular direction, so when you set that, the size of the part doesn't matter. Floating the two parts (or just CFraming them up in the air by a few studs when you set their velocities) will show you that this is indeed the case.
- HotThoth |
|
|
| Report Abuse |
|
|
|
| 22 Oct 2012 05:31 PM |
| Well, *technically* Newton IS wrong. F = MA gives a very accurate approximation, but isn't totally accurate. |
|
|
| Report Abuse |
|
|
Quenty
|
  |
| Joined: 03 Sep 2009 |
| Total Posts: 9316 |
|
|
| 22 Oct 2012 05:37 PM |
Let's talk about quantum physics.
If you have a button 1 light year away, and a 1 light year long board, and you push the board so it pushes the button, how long will it take until the button is pushed?
Diagram.
______________________________________________________________ (A) (B)
A = You B = Button
AB = 1 light year
xD |
|
|
| Report Abuse |
|
|
|
| 22 Oct 2012 08:08 PM |
Bro.
I will assume that the board is made of steel.
I am also assuming that this has to do with how fast a sound wave can travel through a material.
I looked up the length of a light year in kilometres and converted that to metres.
9.4605284e15 m
Then I looked for how fast sound travels through steel, and used the highest speed provided.
6100 m/s
I assume it has to do with sound because sound is like pushing. This is similar to what's described in the problem.
I use the ol' v = d/t and make it t = d/v.
9.4605284e15/6100 = 1.5509063e12 s
1.5509063e12 s = 49178.916 years |
|
|
| Report Abuse |
|
|
lombardo2
|
  |
| Joined: 30 Nov 2008 |
| Total Posts: 1604 |
|
|
| 22 Oct 2012 08:22 PM |
^Wut?, nub problem
let's get serious, solve the three body problem |
|
|
| Report Abuse |
|
|
|
| 22 Oct 2012 10:00 PM |
Well, to levitate an object, you set the Y-axis MaxForce to:
MassOfModel * (236/1.2)
I use this to dynamically set the MaxForce of my aviation projects close to the mass of the plane itself to allow for a small drag effect. |
|
|
| Report Abuse |
|
|