
Differential Equations Ordinary and Partial Differential Equations Math Forum 
 LinkBack  Thread Tools  Display Modes 
December 24th, 2017, 03:42 AM  #1 
Newbie Joined: Dec 2017 From: USA Posts: 3 Thanks: 0  How to model as differential equation ?
Hi guys, it's my first topic and I need to help. I have tried many many times to model this question as differential equation but I could not reach to success despite all my efforts. Can any body help me? I need to write the model of the system as differential equation but I did not understand exactly how to do. I tried many solutions but... So we can assume: M1 = 500KG ; M2 = 450KG m1(t) = 150KG ; m2(t) = 120KG k1 = 20 b1 = 10 k2 = 25 b2 = 15 Last edited by skipjack; December 24th, 2017 at 06:03 AM. 
December 24th, 2017, 03:28 PM  #2 
Newbie Joined: Dec 2017 From: USA Posts: 3 Thanks: 0 
Guys, please help. It is very important. I have an idea for this, while working, it came to my mind. Please think like spring, piston and mass. Like as follows : 
December 24th, 2017, 03:40 PM  #3 
Global Moderator Joined: Dec 2006 Posts: 20,389 Thanks: 2015 
What does "the carrier" mean?

December 24th, 2017, 10:20 PM  #4 
Newbie Joined: Dec 2017 From: USA Posts: 3 Thanks: 0  
April 18th, 2018, 03:43 AM  #5 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902 
Frankly it is not clear to me what "having parameters k and b (stopping force for position and velocity)" means. Are those parameters for friction force? That is, is the friction, or retarding force given by (kx+ bv) where "x" is the position of the car measured from the "tip point of the carrier" and v the velocity of the car? And what is the "tip point the carrier"?


Tags 
differential, equation, model 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Population Modellogistic nonlinear firstorder ordinary differential equation  Jaider  Applied Math  0  April 10th, 2015 05:13 PM 
Verification derived differential equations from model  karlJohanson  Differential Equations  0  May 30th, 2014 02:47 PM 
Find the model equation for this world problem?  Ch13  Algebra  2  November 14th, 2013 02:58 AM 
Forgot how to solve an equation needed for a logistic model  petkiri  Applied Math  2  January 31st, 2012 08:41 PM 
differential equations  population model  mbradar2  Differential Equations  8  September 25th, 2010 01:53 PM 