http://s226.photobucket.com/albums/dd11/jackphotos123/?action=view¤t=Wedge-1.jpg
2007-12-16 08:37:43 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Use this one.
http://s226.photobucket.com/albums/dd11/jackphotos123/?action=view¤t=WedgeB.jpg
2007-12-16 08:49:08 · update #1
20 lbs
2007-12-16 08:55:38 · answer #1 · answered by Rector 2 · 4⤊ 0⤋
As you assert the rope is wrapped 5 instances around the two pulleys, i'm going to assume which potential there are 10 lengths of rope between the two pulleys. So the linked fee ratio of the device would be a million:10 - because of the fact for each foot I pull the string, the decrease pulley will upward push via a million/10 foot. The mechanical benefit (if the device is one hundred% effectual) will as a result be 10:a million, and the rigidity required could be 2 hundred/10 = 20 lb rigidity.
2017-01-08 11:39:41 · answer #2 · answered by ? 4 · 0⤊ 0⤋
40lbs because 200lbs/ 5 (times wrapped around) = 40lbs.
2007-12-16 08:46:50 · answer #3 · answered by Hamza 1 · 0⤊ 2⤋
I'm giving your question a thumbs down.
2007-12-16 13:35:10 · answer #4 · answered by Anonymous · 1⤊ 4⤋