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Unformatted text preview: MAE 101: Statics and Strength of Materials Fall 2011 Due Wednesday, October 12 th , 2011 Problem 10. (Problem 3.11 from Gross et al) A uniform pole (length l , weight G ) leans against a corner as shown in the figure. A rope S prevents the pole from sliding. All surfaces are smooth. Determine the force S in the rope. Answer S = Gl 2 h sin 2 cos Problem 11. (Problem 3.13 from Gross et al). Two smooth rollers (each having weight G and radius r ) are connected by a rope (length a ) as shown in the figure. A lever (length l ) subjected to a vertical force F exerts contact forces on the rollers. Determine the contact forces between the rollers and the horizontal plane. Answer N 1 = G- F l a r 1- 4( r a ) 2 , N 2 = G + F l a r 1- 4( r a ) 2 where N 1 and N 2 are the contact forces acting on the left and on the right roller, respectively. Problem 12. (Problem 3.19 from Gross et al). The circular arch is sub- jected to a uniform tangential line load q . Determine the resultant force R and the resultant moment...
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- Spring '08