A small block of mass M moves on a frictionless surface of an inclined plane , as shown in figure.The angle of the incline suddenly changes from 60
o to 30
o at point B .The block is initially at rest at A .Assume that collisions between the block and the incline are totally inelastic (g =10m/s
2)
![1270746_c57becab1abe44b5961687bd67b2bfbf.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/1270746_c57becab1abe44b5961687bd67b2bfbf.png)