Problem

[B Haskins]

How much weight is required to balance the lever?

1. 15 Kg
2. 5 Kg
3. 10 Kg
4. 7.5 Kg
5. 20 Kg

 

[Ishuda]

How much weight is required to balance the lever?

1. 15 Kg
2. 5 Kg
3. 10 Kg
4. 7.5 Kg
5. 20 Kg

Where do you want it to be balanced? What are the distances from the balance point?

What is the formula for the moment about a particular point? Show us your work so we can see where you are having problems and so we can help you. It would help if you read and followed the 'rules' for posting a problem, see
http://www.freemathhelp.com/forum/threads/54004-Read-Before-Posting