You are working in an ice skating rink and have been asked to hang a new banner on the wall. Your friend is helping you so that the ladder does not collapse by exerting a force FAL at an angle relative to the horizontal. See the diagram below.

The ladder has a length L and makes an angle of with respect to the vertical wall. You have a mass, my, and are a horizontal distance x from the wall. The ladder has a mass of mL. Because the wall is slick, and the ice on the floor is slick, the frictional forces acting on the ladder are negligible. Find a formula for the magnitude of the force that your friend must exert to keep the ladder from falling, in terms of the following variables: x,L,my,mL,?,?. Then use the following values to get a number for FAL. ? = 26.7 degrees ? = 21.093 degrees x = 1.633 meters L = 7.1 meters my = 99.0 kg mL = 36.63 kg FAL= ????

Transcribed Image Text:

Wall 0 X You Ice Floor e FAL Wall 0 X You Ice Floor e FAL

Answer rating: 100% (QA)

Take torques about the contact with the wall my g x ml g L2 sin theta F L sin 90 t... View the full answer