1{\rtf1\ansi\ansicpg1252\cocoartf102{\fonttbl\f1\fnil Droid Sans Mono;\f0\fnil FreeSans;} 2{\colortbl;\red0\green0\blue200;\red0\green0\blue0;} 3\f0\fs24\pard\tx0\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\ql \par 4\par 5\cf1\fs36\b\ulw\ul Static of particles\cf0\ulnone\fs24\b0 \par 6\cf0\cf2 \par 7\cf0\pard\ql\pard\tx0\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\qj Each system have the following conversion factors:\cf0\cf2 \par 8\par 9\par 10\cf0\b \tab SI system\b0 \par 11\par 12\b \tab Symbol\tab \tab Mean\b0 \par 13\tab cm\tab \tab \tab centimeter\par 14\tab \cf0\cf2 g\cf0 \tab \tab \cf0\cf2 \tab gram\cf0 \par 15\tab \cf0\cf2 slug\cf0 \tab \tab \tab \cf0\cf2 slug\cf0 \par 16\tab \cf0\cf2 T\cf0 \tab \tab \tab metric ton\par 17\cf0\cf2 \par 18\par 19\cf0\b \tab \cf0\cf2 English system\cf0\b0 \par 20\par 21\b \tab Symbol\tab \tab Mean\b0 \par 22\tab kg\tab \tab \tab kilogram\par 23\tab \cf0\cf2 g\cf0 \tab \tab \cf0\cf2 \tab gram\cf0 \par 24\tab in\tab \tab \tab inch\par 25\tab lb/in\tab \tab \tab pounds per inch\cf0\cf2 \par 26\par 27\par 28\cf0 In this module, the forces (elements Force, Friction or Resultant) are added to the objects (elements Block, Pulley, Spring and Point) placing the force in one of the cells around the object. Each object (if there isn\rquote t in the chalkboard\rquote s border) have 8 cells around it.\par 29\par 30This module have 30 elements. Notice that some elements have one or two equations, depending of the applied forces. If all forces are horizontal, or vertical, the object have one equation, otherwise have two. \par 31\pard\ql\pard\tx0\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\ql \par 32\cf0\cf2 __________________________________________\cf0 \par 33 \cf0\f1{{\NeXTGraphic sistema.tif \width960 \height960}\'AC}\f0\b Stationary reference system\b0 \par 34\par 35Stationary reference system, with X axis horizontal and positive to the right, and Y axis vertical an positive to upwards. \par 36\par 37\i Equations:\tab None.\par 38\par 39Data:\par 40\tab g:\tab \tab Value of the gravity (absolute value). To default FisicaLab write the gravity\par 41 value to the selected system (9.81 m/s2 to SI, and 32.2 ft/s2 to English system).\i0 \par 42\par 43\cf0\cf2 __________________________________________\par 44\par 45\cf0 \cf0\f1{{\NeXTGraphic bloque.tif \width960 \height960}\'AC}\f0 \b Block\b0 \par 46\par 47A block, allow one friction force, vertical or horizontal. And don\rquote t allow Resultants. \par 48\par 49\i Equations:\tab 1 or 2\par 50\par 51Data:\par 52\tab m: \tab \tab Mass block.\i0 \par 53\par 54\cf0\cf2 __________________________________________\cf0 \par 55 \cf0\f1{{\NeXTGraphic bloque_i.tif \width960 \height960}\'AC}\f0 \b Block above an inclined plane to the left\b0 \par 56\par 57A block, above an inclined plane to the left in the specified angle. Allow one friction force, parallel to the plane. And don\rquote t allow Resultants. \par 58\par 59\i Equations:\tab 2\par 60\par 61Data:\par 62\tab m:\tab \tab Mass block.\par 63\tab ang:\tab \tab Angle of the plane, measured from the horizontal.\i0 \par 64\par 65\cf0\cf2 __________________________________________\cf0 \par 66 \cf0\f1{{\NeXTGraphic bloque_d.tif \width960 \height960}\'AC}\f0 \b Block above an inclined plane to the right\b0 \par 67\par 68A block, above an inclined plane to the \cf0\cf2 right\cf0 in the specified angle. Allow one friction force, parallel to the plane. And don\rquote t allow Resultants. \par 69\par 70\i Equations:\tab 2\par 71\par 72Data:\par 73\tab m:\tab \tab Mass block.\par 74\tab ang:\tab \tab Angle of the plane, measured from the horizontal.\i0 \par 75\par 76\cf0\cf2 __________________________________________\par 77\cf0 \cf0\f1{{\NeXTGraphic r_id.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic r_ii.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic r_h.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic r_v.tif \width960 \height960}\'AC}\f0\b\cf2 Springs\b0 \par 78\par 79Springs without mass, that satisfies the Hooke\rquote s law. \b d\b0 is the length that the spring is stretched or compressed. If the spring is stretched \b d\b0 is positive, if is compressed is negative. Allow one or two forces. If have two forces these must have different sense (stretching or compressing the spring), and the same values or unknown data. Don\rquote t allow frictions or resultants.\par 80\par 81\cf0\i Equations:\tab 1\cf0\cf2 \par 82\par 83Data:\par 84\tab k:\tab \tab Spring constant.\par 85\tab d: \tab \tab Length that the spring is stretched or compressed.\i0 \par 86\par 87__________________________________________\cf0 \par 88 \cf0\f1{{\NeXTGraphic polea.tif \width960 \height960}\'AC}\f0 \b Pulley\b0 \par 89\par 90A pulley without mass. Don\rquote t allow frictions or resultants.\par 91\par 92\i Equations:\tab 1 or 2\par 93\par 94Data:\par 95\tab Name:\tab Name of the pulley (this data is irrelevant).\i0 \par 96\par 97\cf0\cf2 __________________________________________\cf0 \par 98 \cf0\f1{{\NeXTGraphic p_estatica.tif \width960 \height960}\'AC}\f0\b Static point\b0 \par 99\par 100A static point without mass. Don\rquote t allow frictions.\par 101\par 102\i Equations:\tab 1 or 2\par 103\par 104Data:\par 105\tab Name:\tab Name of the point (this data is irrelevant).\i0 \par 106\par 107\cf0\cf2 __________________________________________\par 108\cf0 \par 109 \cf0\f1{{\NeXTGraphic angcomp.tif \width960 \height960}\'AC}\f0 \b Angles\b0 \par 110\par 111To relate two angles that must be complementary. Both angles must be unknowns.\par 112\par 113\i Equations:\tab 1\par 114\par 115Data:\par 116\tab ang1:\tab One angle.\par 117\tab ang2:\tab Other angle.\i0 \par 118\par 119\cf0\cf2 __________________________________________\cf0 \par 120\par 121 \cf0\f1{{\NeXTGraphic f_arriba.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic f_abajo.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic f_izquierda.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic f_derecha.tif \width960 \height960}\'AC}\f0 \b Vertical or horizontal forces\b0 \par 122\par 123Forces with the direction and sense of the arrow.\par 124\par 125\i Equations:\tab None.\par 126\par 127Data:\par 128\tab f:\tab \tab Magnitude of the force.\i0 \par 129\par 130\cf0\cf2 __________________________________________\cf0 \par 131\par 132 \cf0\f1{{\NeXTGraphic f_ne.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic f_no.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic f_se.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic f_so.tif \width960 \height960}\'AC}\f0 \b Oblique forces\b0 \par 133\par 134Oblique forces with the sense of the arrow.\par 135\par 136\i Equations:\tab None.\par 137\par 138Data:\par 139\tab f:\tab \tab Magnitude of the force.\par 140\tab ang:\tab \tab Positive angle of the force, measured from the horizontal.\i0 \par 141\par 142\cf0\cf2 __________________________________________\cf0 \par 143\par 144 \cf0\f1{{\NeXTGraphic friccion_ar.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic friccion_ab.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic friccion_i.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic friccion_d.tif \width960 \height960}\'AC}\f0 \b Vertical or horizontal friction forces\b0 \par 145 \par 146Friction forces with the direction and sense of the arrow.\par 147\par 148\i Equations:\tab None.\par 149\par 150Data:\par 151\tab Normal:\tab Normal to calculate the friction force.\par 152\tab u:\tab \tab Friction coefficient, static or dynamic.\i0 \par 153\par 154\cf0\cf2 __________________________________________\cf0 \par 155\par 156 \cf0\f1{{\NeXTGraphic friccion_ne.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic friccion_no.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic friccion_se.tif \width960 \height960}\'AC}\f0 \cf0\f1{{\NeXTGraphic friccion_so.tif \width960 \height960}\'AC}\f0 \b Oblique friction forces\b0 \par 157\par 158Oblique \cf0\cf2 frictions \cf0 forces with the sense of the arrow. To be applied to a block on an inclined plane. The angle of force is the same as of the plane.\cf0\cf2 \par 159\par 160\cf0\i Equations:\tab None.\cf0\cf2 \par 161\par 162Data:\par 163\cf0 \tab Normal:\tab Normal to calculate the friction force.\cf0\cf2 \par 164\tab u:\tab \tab \cf0 Friction coefficient, static or dynamic.\i0 \par 165\par 166\cf0\cf2 __________________________________________\par 167\cf0 \cf0\f1{{\NeXTGraphic resultante_v.tif \width960 \height960}\'AC}\f0\b\cf2 Vertical resultant\cf0\b0 \cf0\f1{{\NeXTGraphic resultante_h.tif \width960 \height960}\'AC}\f0\b\cf2 Horizontal resultant\b0 \par 168\par 169Resultants\cf0 with the direction and sense of the arrow.\cf0\cf2 \par 170\par 171\cf0\i Equations:\tab \cf0 None.\cf2 \par 172\par 173Data:\par 174\tab f:\tab \tab Magnitude of the resultant.\i0 \par 175\par 176__________________________________________\par 177\cf0 \cf0\f1{{\NeXTGraphic resultante.tif \width960 \height960}\'AC}\f0\b\cf2 Resultant\b0 \par 178\par 179Oblique resultant.\par 180\par 181\cf0\i Equations:\tab \cf0 None.\cf2 \par 182\par 183Data:\par 184\tab f:\tab \tab Magnitude of the resultant.\par 185\tab ang:\tab \tab Angle of the resultant, measured from the positive X axis. The positive\par 186 sense is the opposite of clockwise.\i0 \par 187\par 188}