filmov
tv
A block kept on an inclined surface, just begins to slide if the inclination is `30^(@)`. The block
![preview_player](https://i.ytimg.com/vi/-nOFkrPc_n4/maxresdefault.jpg)
Показать описание
A block kept on an inclined surface, just begins to slide if the inclination is `30^(@)`. The block is replaced by another block B and it is just begins to slide if the inclination is `40^(@)`, then :