Hello!:) Off to a rough start with physics.. but in challenge prob 1 Units & Dimentional analysis... http://ocw.mit.edu/courses/physics/8-01sc-physics-i-classical-mechanics-fall-2010/units-and-dimensional-analysis/MIT8_01SC_problems01.pdf how did they find the eq'n 0=-3V + W + X +2Y

Question

Hello!:) Off to a rough start with physics.. but in challenge prob 1 Units & Dimentional analysis... http://ocw.mit.edu/courses/physics/8-01sc-physics-i-classical-mechanics-fall-2010/units-and-dimensional-analysis/MIT8_01SC_problems01.pdf  how did they find the eq'n 0=-3V + W + X +2Y

anonymous · Answer

well...as we see that on left side L=0
but right hand side L=-3V+W+X+2Y +2Z
hence...equating left hand side and right hand side...we get the required equation!
hope it helpz!!