- #1

indietro

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## Homework Statement

There is a piano that is being lowered 5 m. It has gravity force acting in y-direction (down) of 2500 N. Then it has two ropes attached, they are vectors that are pointing up and out. so T1 is 1830N [W60

^{[tex]\circ[/tex]}N] and T2 is 1295N [E45

^{[tex]\circ[/tex]}N]

## Homework Equations

so the work by gravity is 12500 J

the work by T1 is 4575 J (opposite direction to work by gravity)

## The Attempt at a Solution

so it would make sense that the work by T2 is somewhere close to 7000 J so that the net work is 0. but when i calculate it i get around 4000 J. Can someone check my math...

For T2:

W = Fcos[tex]\theta[/tex][tex]\Delta[/tex]r

= 1295*cos45*(5)

= 4579 J

? - thnx!