Which displacement value will produce the smallest restoring force if the same spring is used in each case? "A.1\2 cm" "B.2cm" "C.1\3 cm" "D.3cm"

Question

anonymous · Answer

$$F \alpha   -x$$ Hope you can do it from here

anonymous · Answer

@chand You think you can help me out I want to figure it out I dont really want the awesner but you think you can add a little more? please?

anonymous · Answer

Force is directly proportional to the negative of the elongation. So, 
$$F \alpha  -x$$
$$F= -kx$$   Longer the elongation, greater the force is.

anonymous · Answer

@chand Thanks!

anonymous · Answer

no problem