Answer to Question #222007 in Physics for caleb villarreal

Question #222007

A spring (k = 2.3 N/m) is attached to a superman doll of mass = 10 kg. If the action figure is hung from the ceiling by this spring, how much would the spring be stretched?’

Expert's answer

The string will stop stretching when the force of gravity is equal to the elastic force:

F_g=F_e,\\ mg=kx,\\\space\\ x=\frac{mg}{k}=42.6\text m.

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