Physics Help Forum pretty simple equation just blanking on the answer;

 Kinematics and Dynamics Kinematics and Dynamics Physics Help Forum

 Jun 5th 2015, 10:25 AM #1 Junior Member   Join Date: Mar 2015 Posts: 4 pretty simple equation just blanking on the answer; so the equation I was left with was: 50cm = 2T -(.0625T^2) ....and I am to solve for T here the answer is: T=0 and 32, the latter being the answer I'm looking for but idk how we got there? and input would be valuable.
 Jun 5th 2015, 11:41 AM #2 Physics Team     Join Date: Jun 2010 Location: Morristown, NJ USA Posts: 2,354 As written you can't get those two answers. Starting with: 50 = 2T-0.0625T^2 Rearrange to get: 0.0625T^2-2T+50 = 0 Then use the quadratic formula to solve for T, and it turns out to not have any real answers. It appears that what you actually want to solve is this: 0 = 2T-0.0625T Factor: 0 = T(2-0.0625T) To make the right hand side equal zero either T = 0 or T = 2/0.0625 = 32.
 Jun 5th 2015, 07:03 PM #3 Junior Member   Join Date: Mar 2015 Posts: 4 right ok thank you idk what I was thinking, but yeah the quadratic equation, lol that's what I needed.

 Tags answer, blanking, equation, pretty, simple

 Thread Tools Display Modes Linear Mode

 Similar Physics Forum Discussions Thread Thread Starter Forum Replies Last Post helpmeout Kinematics and Dynamics 1 Sep 29th 2015 03:46 AM Luke101 General Physics 8 Sep 3rd 2014 03:34 PM I<3Kinematics Kinematics and Dynamics 1 Jan 5th 2010 06:41 AM blaZkowicZ Advanced Mechanics 1 Oct 25th 2009 09:41 PM alpha Thermodynamics and Fluid Mechanics 3 Jul 2nd 2008 04:22 AM