An object with a mass of #7 kg# is hanging from a spring with a constant of #2 (kg)/s^2#. If the spring is stretched by # 3 m#, what is the net force on the object?

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Answer 1 · 2017-06-29T06:46:41

The net force is #=62.6N#

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The mass of the object is #m=7kg#

The spring constant is #=2kgs^-2#

The extension of the spring is #Deltax=3m#

Resolving in the direction #darr_+#

The net force is

#=mg-kDeltax=7g-3*2#

#=7g-6=62.6N#

acting downwards