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{
"metadata": {
"name": "chapter 11.ipynb"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"CHAPTER 11: VIRTUAL WORK"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 11.11-6, Page no 188"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"\n",
"#Initilization of variables\n",
"N=100 #lb\n",
"mu=0.3 #coefficient of friction\n",
"l=5 #in compressed to length\n",
"\n",
"#Calculations\n",
"#Simplfying the calculations we obtain\n",
"M=8*(N+N*mu) #lb-in\n",
"\n",
"#Result\n",
"print'The Moment is',round(M,3),\"lb-in\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The Moment is 1040.0 lb-in\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 11.11-7, Page no 189"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"\n",
"#Initilization of variables\n",
"m=10 #kg\n",
"g=9.81 # m/s**2\n",
"F=200 #N\n",
"l=3 #m\n",
"\n",
"#Calculations\n",
"#Applying Virtual work principle\n",
"By=m*g*0.5 #N\n",
"Bx=F*(2*3**-1) #N\n",
"#By equations of equilibrium\n",
"Ax=-Bx-F #N negative sign indictaes the LEFT orientation\n",
"Ay=m*g-By #N\n",
"\n",
"#Result\n",
"print'The values are'\n",
"print'Ax=',round(Ax),\"N to left\"\n",
"print'Ay=',round(Ay),\"N up\"\n",
"print'Bx=',round(Bx),\"N to right\"\n",
"print'By=',round(By),\"N up\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The values are\n",
"Ax= -333.0 N to left\n",
"Ay= 49.0 N up\n",
"Bx= 133.0 N to right\n",
"By= 49.0 N up\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
