document.write( "Question 1122127: A force of 50 grams and of 60 gram act at an angle of 37 degrees between them. Determine the resultant using the cosine law. \n" ); document.write( "
Algebra.Com's Answer #738181 by ikleyn(52777)\"\" \"About 
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document.write( "The resulting force magnitude is\r\n" );
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document.write( "|F| = \"sqrt%2850%5E2+%2B+60%5E2+-+2%2Acos%28180%5Eo-37%5Eo%29%2A50%2A60%29\" = \"sqrt%2850%5E2+%2B+60%5E2+-+2cos%28143%5Eo%29%2A50%2A60%29\" grams.\r\n" );
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document.write( "Use your calculator.\r\n" );
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document.write( "To understand why it is so, use the parallelogram rule of adding forces (vectors) and make a sketch.\r\n" );
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\n" ); document.write( "\n" ); document.write( "About adding vectors in a plane and about the parallelogram rule of adding vectors see the lesson\r
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\n" ); document.write( "\n" ); document.write( "Notice. It was VERY long time ago when the force was measured in kilograms and grams.\r
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\n" ); document.write( "\n" ); document.write( "In modern unit system the basic unit of force is Newton.\r
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