(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I am having problem calculating this question. I even looked at the answer sheet and worked back, which gave me some luck, but still do not fully grasp the question.(i) Calculate the weight W of the workman.

2. Relevant equations

moment clockwise = moment anticlockwise

3. The attempt at a solution

My attempt pre look at question: I did 0.20-0.03= 0.17, 0.20+0.03= 0.23 so far so good.

I the did 0.20+0.50=0.70 so middle Q which then gave me 0.67 and 0.73. I then took the W*0.17=160*0.73.

But when I looked at the answer I got the first part right but the second part wrong. Do I have to include R and S into the equation? I would appreciate the help if possible.

Also here is what the answer says: W × 0.17/0.20/0.23 = 160 × 0.72/0.75/0.78

W × 0.17 = 160 × 0.78 or 600 N

730/734 N

I really cant see where the 0.72 ect come from unless you included distance from R S but the weight is in the middle.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Exam question problem: moments

**Physics Forums | Science Articles, Homework Help, Discussion**