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-rw-r--r--3886/CH3/EX3.8/3_8.txt3
-rw-r--r--3886/CH3/EX3.8/Ex3_8.sce13
2 files changed, 16 insertions, 0 deletions
diff --git a/3886/CH3/EX3.8/3_8.txt b/3886/CH3/EX3.8/3_8.txt
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+++ b/3886/CH3/EX3.8/3_8.txt
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+
+--> exec('E:\My program EM\3. Resultant and equilibrium of system of coplanar non-concurrent forces\Ex3_8.sce', -1)
+The resultant is R=580.3 N as shown in fig.3.17 (a) \ No newline at end of file
diff --git a/3886/CH3/EX3.8/Ex3_8.sce b/3886/CH3/EX3.8/Ex3_8.sce
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+//determine the resultant
+//refer fig. 3.17 (a) and (b)
+Rx=-400*cosd(45)-150*cosd(30) //N (towards left)
+Ry=200+400*sind(45)-150*sind(30)
+R=sqrt(Rx^2+Ry^2) //N
+alpha=atand(Ry/Rx) //degree
+//assume that the resultant intersects arm AB at a distance of x from A
+//taking moment about A
+MA=-400*3*sind(45)-400*0.6*cosd(45)+50+150*6*sind(30)+150*1*cosd(30) //N-m (anticlockwise)
+x=MA/Ry //m
+printf("The resultant is R=%.1f N as shown in fig.3.17 (a)",R)
+
+