initial commit / add all books

1 files changed, 29 insertions, 0 deletions

diff --git a/1205/CH8/EX8.6/S_8_6.sce b/1205/CH8/EX8.6/S_8_6.sce
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index 000000000..ea651651d
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+++ b/1205/CH8/EX8.6/S_8_6.sce
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+clc;

+

+d1=100;//mm, diameter of pulley

+d2=50;//mm, diameter of shaft

+us=0.20;// Coeffiecient of static friction between shaft and pully

+W=2.5;//kN , load

+W=W*1000;//N, conversio into N

+//Vertical Force required to raise load

+rf=d2/2*us;//mm, Perpendicular distance from the center Of pully to line of action 

+//summing moment about B

+P=W*(d1/2+rf)/(d1/2-rf);//N , downward Force required to raise load

+printf("Force required to raise load is %.0f N in downward direction\n",P);

+

+//Vertcal Force required to hold load

+

+//summing moment about C

+P=W*(d1/2-rf)/(d1/2+rf);//N , downward Force required to hold load

+printf("Force required to hold load is %.0f N in downward direction\n",P);

+

+//Horizontal force P to start raising the load

+OE=rf;//mm,

+OD=sqrt((d1/2)^2+(d1/2)^2);//mm, pythagorus theorm

+theta=asin(OE/OD);//rad, 

+

+// from force triangle

+P=W/tan(%pi/4-theta);//N, Horizontal force P to start raising the load

+printf("Horizontal force P required to start raising the load is %.0f N\n",P);

+

+printf("Answer for this example shows variatio , but actual solving gives answers executed by programme\n");