CGTalk Physics problems
 10-04-2003, 08:09 AM #1 sutabi Blender God   portfolio Joseph Montanez Web Developer Helmsdale, United States   Join Date: Jul 2003 Posts: 107 Physics problems I am wanting a constant acceration no matter incline The incline is 15 degree but I dont know it 15 degrees, the gravity is earth gravity and the mass is 1. The time interval = .1 I just take the current position - last stored position to find the x and y displacment so the resulting force or net force = mass*gravity*(y/sqrt(x*x+y*y) Note: (y/sqrt(x*x+y*y) = cos(theta) so force = .855 and veloctiy (x axis) = .29 Now lets say I want velocity to be a constant 1.00 So displacment(x axis) = v/t = 1/.1 = 10 and I can't calculated acceration until the postions are stored so A = final velocity - initial velocity/time interval NOW! here where I am lost if I can figure the force needed for 15 degress and the velocity is .25 how do I figure out the force need to keep velocity at 1.00 with x degrees __________________ | AnimeReign.com | High Quality Anime Streams & Downloads share quote
 10-16-2003, 01:38 AM #2 ajk48n Frequenter   portfolio Adam Katz Freelance 3d Animator/Motion Graphics Designer Sydney, Australia   Join Date: Nov 2002 Posts: 256 I'm not quite sure if this helps or not, but you said: so the resulting force or net force = mass*gravity*(y/sqrt(x*x+y*y) Note: (y/sqrt(x*x+y*y) = cos(theta) Wouldn't this also mean that force = mass*gravity*cos(theta) If it did, then coudn't you find the force by just plugging the angle of your ramp into the equation? Also, in this: So displacment(x axis) = v/t = 1/.1 = 10 and I can't calculated acceration until the postions are stored so A = final velocity - initial velocity/time interval You say you can't find A until you have the positions, but can't you assume that one position will be (0,0), and then find the other position based on veloctiy being 1, and you angle being x. share quote
 01-16-2006, 07:00 AM #3 CGTalk Moderation Lord of the posts   Join Date: Sep 2003 Posts: 1,066,481 Thread automatically closed This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum. __________________ CGTalk Policy/Legalities Note that as CGTalk Members, you agree to the terms and conditions of using this website. share quote

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