77 lines
1.4 KiB
Plaintext
77 lines
1.4 KiB
Plaintext
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{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {},
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"outputs": [],
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"source": [
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"import sympy as sm\n",
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"import sympy.physics.mechanics as me\n",
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"me.init_vprinting()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {},
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"outputs": [],
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"source": [
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"m1, m2, m3, m4 = sm.symbols('m1, m2, m3, m4')\n",
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"N = me.ReferenceFrame('N')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {},
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"outputs": [],
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"source": [
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"r1 = 3*N.x + 4*N.y\n",
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"r2 = 3*N.y + 4*N.z\n",
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"r3 = 4*N.x + 4*N.z\n",
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"r4 = 3*N.y + 4*N.z"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"metadata": {},
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"outputs": [],
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"source": [
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"first_moment = m1*r1 + m2*r2 + m3*r3 + m4*r4"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 5,
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"metadata": {},
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"outputs": [],
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"source": [
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"zeroth_moment = m1 + m2 + m3 + m4"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "MinerU",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.10.16"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}
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