![The spring block system lies on a smooth horizontal surface. The free endof the spring is being. - YouTube The spring block system lies on a smooth horizontal surface. The free endof the spring is being. - YouTube](https://i.ytimg.com/vi/w-RLGP3IELo/maxresdefault.jpg)
The spring block system lies on a smooth horizontal surface. The free endof the spring is being. - YouTube
![A spring block system is placed on a rough horizontal floor. The block is pulled towards right to give the spring some elongation and released. Then: A spring block system is placed on a rough horizontal floor. The block is pulled towards right to give the spring some elongation and released. Then:](https://d1hj4to4g9ba46.cloudfront.net/questions/133225_3a8281f1922248209938e8a8a3a9e9a2.png)
A spring block system is placed on a rough horizontal floor. The block is pulled towards right to give the spring some elongation and released. Then:
![Spring Block with Two Hole for 40 Series - China Heavy Duty Spring Block, Self-Aligning Spring Block | Made-in-China.com Spring Block with Two Hole for 40 Series - China Heavy Duty Spring Block, Self-Aligning Spring Block | Made-in-China.com](https://image.made-in-china.com/2f0j00YcGkdbfrsPoQ/Spring-Block-with-Two-Hole-for-40-Series.jpg)