initial commit / add all books

1 files changed, 37 insertions, 0 deletions

diff --git a/1862/CH9/EX9.7/C9P7.sce b/1862/CH9/EX9.7/C9P7.sce
new file mode 100755
index 000000000..d0179a9b4
--- /dev/null
+++ b/1862/CH9/EX9.7/C9P7.sce
@@ -0,0 +1,37 @@
+

+clear

+ clc

+//to find forces exerted on the ladder by the ground and by the wall

+

+

+// GIVEN::

+

+//refer to figure 9-23(a) from page no. 189

+//length of ladder

+L = 12//in meters

+//mass of ladder

+m = 45//in kg

+//distance of upper end of ladder above the ground

+h = 9.3//in meters

+//mass of firefighter

+M = 72//in kg

+//acceleration due to gravity

+g = 9.8//in m/s^2

+

+// SOLUTION:

+

+//refer to figure 9-23(b) from page no. 189

+//distance from the wall to the foot of ladder

+a = sqrt(L^2 - h^2)//in meters

+//considering equillibrium conditions

+//finding normal reaction by ground

+N = (M+m)*g//in N

+//force exerted on ladder by the wall

+Fw = (g*a*(M/2 + m/3))/h//in N

+N = round(N)

+Fw = round(Fw)

+printf ("\n\n Distance from the wall to the foot of ladder a = \n\n %.1f m",a);

+//answer is slightly different than book.But answer of scilab program is same as that of calculator

+printf ("\n\n Forces exerted on the ladder by the ground N = \n\n %3i N",N);

+//answer is slightly different than book.But answer of scilab program is same as that of calculator

+printf ("\n\n Forces exerted on the ladder by the wall Fw = \n\n %3i N",Fw);