# An object with a mass of 6 kg is hanging from a spring with a constant of 12 (kg)/s^2. If the spring is stretched by  12 m, what is the net force on the object?

$\Delta F = - 647 , 46 N$
$\text{Gravity of mass :} G = m . g$
$G = 6.9 , 81 = 58 , 86 N$
$\text{Force on spring :} F = 12 .58 , 86 = 706 , 32$
$\text{Net Force :} 58 , 86 - 706 , 32$
$\Delta F = - 647 , 46 N$