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## Homework Statement

A 10-m uniform beam of weight 100 N is supported by two ropes at its ends. If a 400 N person sits at 2.0 m from the left end of the beam, what is the tension in the left rope?

I thought the answer would be:

## The Attempt at a Solution

100*5 + 400*7 = T*10

3300 = T*10

T = 330 N

But it's not correct. What am I doing wrong?

Also:

A book weighs 6 N. When held at rest above your head the net force on the book is? I say -6 N. Is this correct?

Thanks!