A spring is connected with plank and other end of spring is connected with a block of mass m. Initially spring is stretched by a distance x
0 and block is connected with a thread which is connected to other end of the plank as shown. If thread is cut, what will be maximum speed of the plank.
![156133_f781cb9b120549ffb9937165c3393196.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/156133_f781cb9b120549ffb9937165c3393196.png)