document.write( "Question 751231: What is the potential energy of a 72 kg person sitting on a ladder2 m off the ground? (Write out the unit) \n" ); document.write( "

Algebra.Com's Answer #457077 by Edwin McCravy(20065) $\"\"$ $\"About$

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document.write( "PE = mgh  (the m is for mass in kg, not meters)\r\n" );
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document.write( "PE = (72kg)(9.8)   (the m's are for meters, not mass.)\r\n" );
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document.write( "PE = 1411.2\r\n" );
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document.write( "And since 1 newton = 1N = 1,\r\n" );
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document.write( "PE = 1411.2 N·m\r\n" );
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document.write( "and since 1 newton·meter = 1 N·m = 1 joule\r\n" );
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document.write( "PE = 1311.2 joules.\r\n" );
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document.write( "Edwin

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