- #1

- 120

- 3

*F*=

*kX (Wikipedia)''*And further on this topic there is a statement that

''Hooke's law for a spring is often stated under the convention that F is the restoring (reaction) force exerted by the spring on whatever is pulling its free end''...

My question is that, Is the force F the force which we apply continuosly for some time to extend the spring upto some distance X, or is it the force needed to ''hold'' the stretched spring at the distance X (the former force will obviously be greater than the second)??? If it is the first force than should'nt it be the second one???