Problem 2. Four 1-in.-diameter pegs are attached to a board as shown. Two strings are passed around the pegs and pulled with the forces indicated. (a) Determine the resultant couple acting on the board. (b) If only one string is used, around which pegs should it pass and in what directions should it be pulled to create the same couple with the minimum tension in the string?
Problem 2. Four 1-in.-diameter pegs are attached to a board as shown. Two strings are passed around the pegs and pulled with the forces indicated. (a) Determine the resultant couple acting on the board. (b) If only one string is used, around which pegs should it pass and in what directions should it be pulled to create the same couple with the minimum tension in the string?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:400 N
200 N
1800 N-m
Problem 2. Four 1-in.-diameter pegs are attached to a board as shown. Two strings are passed around the
pegs
and pulled with the forces indicated. (a) Determine the resultant couple acting on the board. (b) If only
one string is used, around which pegs should it pass and in what directions should it be pulled to create the
same couple with the minimum tension in the string?
10 im.
6 in
1S in.
40 th
12m 12-
12 in.
Problem 3. One end of rod AB rests in the corner A and the other end is attached to cord BD. (a) draw the
FBD for rod AB, (b) If the rod supports a 40-lb load at its midpoint C, find the reaction at A and the tension
in the cord.
%3D
Problem 4. Eight identical 500 x 750-mm rectangular plates, each of mass m 40 kg, are held in a vertical
plane as shown. All connections consist of frictionless pins, rollers, or short links. In each case, determine
rimpronerly constrained, (b) the reactions are statically
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