 #1
Femme_physics
Gold Member
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I really appreciate you guys helping me in all those problems  tinytim, nvn! I appreciate the fact there's online support to help me get ready as I'm about to go into a study group with other students which I'll probably be the teacher of (they haven't solved most of what I solved partly thanks to you). I wanna get everything straight.
http://img256.imageshack.us/img256/4048/52987150.jpg [Broken]
Calculate the forces at the supports A and D of this hard frame depicted in the diagram. On the frame acts at point B horizontal force F. No need to consider the frame's weight.
The answers are written in the scanjob at the lower right section.
Okay, I get Rd: Tell me if it's correct
Sum of all moments on A = 0 = F x a + D x 2a = 0
Rd = Fa/2a
Rd = 0.5 F
Okay, got it.
Sum of all moments on D = F x a + Ray x 2a = 0
Fa = Ray x 2a
Ray = Fa/2a
Ray = 0.5 F
Okay....getting the same result in both....what's wrong with this picture?
Homework Statement
http://img256.imageshack.us/img256/4048/52987150.jpg [Broken]
Calculate the forces at the supports A and D of this hard frame depicted in the diagram. On the frame acts at point B horizontal force F. No need to consider the frame's weight.
The answers are written in the scanjob at the lower right section.
The Attempt at a Solution
Okay, I get Rd: Tell me if it's correct
Sum of all moments on A = 0 = F x a + D x 2a = 0
Rd = Fa/2a
Rd = 0.5 F
Okay, got it.
Sum of all moments on D = F x a + Ray x 2a = 0
Fa = Ray x 2a
Ray = Fa/2a
Ray = 0.5 F
Okay....getting the same result in both....what's wrong with this picture?
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