Respostas

2014-04-15T09:17:21-03:00
Resposta

Epel = K.x² /2

Epel = 8000.0,05² /2

Epel = 10 J
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2014-04-15T09:19:18-03:00
Epe = k * x² / 2 
Epe = 8000 * 0,05² / 2 
Epe = 4000 * 0,0025 
Epe = 10J