# Help from the physics guys please?

Discussion in 'Off Topic [BG]' started by WickedPissah, Mar 23, 2009.

1. ### WickedPissah

Jan 22, 2008
Boston
How would one go about finding the mechanical advantage of a pulley system?

2. ### ehque

Jan 8, 2006
Singapore
Number of ropes supporting the weight.

If you resolve all the forces and the tension, you will see that the upward force that you are exerting on the mass you are lifting equals to the total tension in all the ropes lifting it. Tension in all the ropes are equal, and are also equal to your pulling force. Therefore the number of ropes "lifting" the mass = the mechanical advantage. 2 ropes, 2 times advantage, 5 ropes, 5 times advantage.

Jan 22, 2008
Boston
Thanks!

4. ### lousybassplayer

Jan 30, 2009
J-Actionville, NC
IN 7 years you will find the love of your life. You will need to make an important decision concerning your finances, and you will lose a beloved trinket in the couch cushions within the week, but it will be discovered by a close male friend.

Oh, wait....