My Math Forum Solving for mass
 User Name Remember Me? Password

 Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion

 January 20th, 2018, 09:50 AM #1 Newbie   Joined: Jan 2018 From: Sweden Posts: 1 Thanks: 0 Solving for mass I have the following formula: $$m = \frac {4π^2} {GP^2}r1(r1+r2)^2$$ Where: G = 6.674x10^-11 P = 10 years = 3.154x10^8 seconds r1 = 4.5x10^12 The task previewed this would be inputed with the values and simplified to: $$m = 2.6*10^7(4.5*10^{12}+r2)^2$$ but I simply can't solve the formula for that result. I was hoping someone could walk be through how to get specifically the value: $$2.6*10^7$$ cause that's where I'm stuck. Thanks in advance and I hope I put this question in the right place! (First post)
 January 20th, 2018, 10:32 AM #2 Global Moderator   Joined: Dec 2006 Posts: 18,959 Thanks: 1604 Let's assume $G = (20/3)×10^{-11}$ and $P^2 = 10^{17}$ approximately, so that $GP^2$ = (2/3)×10^7 approximately. Let's also approximate $4\pi^2r1$ as 178×10^12. That means 4$\pi^2r1$/((2/3)×10^7) is about (178/(2/3))×10^5, which is 2.67×10^7. Did you get something wildly different?

 Tags mass, solving

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post Alamar Math 18 December 15th, 2015 07:58 AM girlbadatmath Chemistry 10 October 16th, 2014 12:50 PM boaz Algebra 6 November 17th, 2013 11:40 AM slice_of_god Real Analysis 1 June 4th, 2013 02:11 PM DesolateOne Elementary Math 1 December 16th, 2010 07:37 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top

Copyright © 2018 My Math Forum. All rights reserved.