Posted by **kaitlyn** on Sunday, December 12, 2010 at 2:38pm.

A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 210 N and is 2.80 m long. What is the tension in each rope when the 710 N worker stands 1.80 m from one end?

smaller and larger.

- physics -
**MathMate**, Sunday, December 12, 2010 at 2:54pm
Draw a sketch:

T1================210N======710N=======T2

Take moments about the left:

T2*2.8 - 210*1.4 - 710*1.8 = 0

Solve for T2

Take moments about the right:

-T1*2.8 + 210*1.4 + 71-*(2.8-1.8) = 0

Solve for T1

- physics -
**kaitlyn**, Sunday, December 12, 2010 at 3:06pm
i keep coming up with the wrong answer for T1. i am getting 358.57 and its wrong.

- physics -
**MathMate**, Sunday, December 12, 2010 at 3:25pm
Unless your question takes T2 as the first answer, which is supposed to be (710+210)-358.57 = 561.43.

If that's not the case, verify

1. instruction for rounding of answers (to the nearest newton, two decimals, etc.)

2. order of the answers (which should add up to 710+210.

3. Check that the numbers posted correspond to the questions on the computer.

4. Sometimes after a wrong answer, the qustion gets modified by the computer. Make sure that did not happen.

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