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-rw-r--r--3886/CH13/EX13.8/13_8.sce15
-rw-r--r--3886/CH13/EX13.8/13_8.txt3
2 files changed, 18 insertions, 0 deletions
diff --git a/3886/CH13/EX13.8/13_8.sce b/3886/CH13/EX13.8/13_8.sce
new file mode 100644
index 000000000..5d900a1a7
--- /dev/null
+++ b/3886/CH13/EX13.8/13_8.sce
@@ -0,0 +1,15 @@
+//Find the least initial velocity
+//refer fig. 13.10
+//Let u the initial velocity required and alpha the angle of projection
+//here
+range=9 //m
+//at P x=5m and y=4m
+//u^2=(9*g)/(sind(2*alpha))
+//from the equation of trajectory
+alpha=atand(1.8) //degree
+//thus
+u=sqrt((9*9.81)/(sind(2*60.95))) //m/sec
+printf("u=%.2f m/sec",u)
+
+
+
diff --git a/3886/CH13/EX13.8/13_8.txt b/3886/CH13/EX13.8/13_8.txt
new file mode 100644
index 000000000..c162baaf8
--- /dev/null
+++ b/3886/CH13/EX13.8/13_8.txt
@@ -0,0 +1,3 @@
+
+--> exec('E:\My program EM\13. Projectiles\13.8.sce', -1)
+u=10.20 m/sec \ No newline at end of file