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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 2 Fundamental Concepts"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex:2.1 Pg:34"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Potential energy = 3217.39 ft-lbm\n"
]
}
],
"source": [
"#Initialization of variables\n",
"z=100 #ft\n",
"m=32.1739 #lbm\n",
"#calculations\n",
"PE=m*z\n",
"#results\n",
"print \"Potential energy = %.2f ft-lbm\"%(PE)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex:2.2 Pg:35"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Absolute energy of this mixture = 5.40e+17 ft-lbf\n",
"\n",
" In case b, there is no change in mass\n",
"\n",
" Change in mass = -3.15e-09 lbm\n",
"The answers are a bit different due to rounding off error in textbook.\n"
]
}
],
"source": [
"#Initialization of variables\n",
"m0=18.016 #lbm\n",
"gc=32.1739 #lbm ft/lbf sec**2\n",
"c=186000*5280\n",
"dU=94.4*10**6 #ft-lbf\n",
"#calculations\n",
"U=m0/gc *c**2\n",
"dm= -dU*gc/c**2\n",
"#results\n",
"print \"Absolute energy of this mixture = %.2e ft-lbf\"%(U)\n",
"print \"\\n In case b, there is no change in mass\"\n",
"print \"\\n Change in mass = %.2e lbm\"%(dm)\n",
"print \"The answers are a bit different due to rounding off error in textbook.\""
]
}
],
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"kernelspec": {
"display_name": "Python 2",
"language": "python",
"name": "python2"
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"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython2",
"version": "2.7.9"
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},
"nbformat": 4,
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|
