How do I find the tenion of T1 and T2? Thanks so much!!!
Problem: http://i42.tinypic.com/292bgw8.png

Question

How do I find the tenion of T1 and T2? Thanks so much!!!
Problem: http://i42.tinypic.com/292bgw8.png

anonymous · Answer

Balance the forces in the y direction and the x direction (vertical and horizontal)

y:   (2kg)(9.8 N/kg) = T1 sin(45) + T2 sin(30)

x:                         0 = T1 cos(45) - T2 cos(30)

You have two equations and two unknowns (T1 and T2), which can be solved.

anonymous · Answer

Thanks for all of the help! My only question is how do you isolate T1 vs T2 in the equations? They make sense but, how do I deal with the two variables? Thanks so much for everything!!

anonymous · Answer

Evaluate the sin and cos functions to give yourself decimal multipliers.

General approach:  a x + b y = c
                              e x + f y  = g

multiply second equation, each term by (a/e)

gives you               a x + (a/e) f y = (a/e) g

subtract this equation from the very first one

and you get rid of the a x terms, so have an equation in y terms only. Solve it.