Шар массой т и радиусом г подвешен на верёвке длиной l к вертикальной гладкой стене в точке А Определите силу реакции опоры

I have the best bedroom in world! I love it! There is a big, light room with  3 big wondows! I have silver-pink wallpapers with different flowers and lamp which looks like japanese flower - sakura. I have big fluffy bed which always is warm. It's the best place for me. I always love sleep there, eat there, play there ... Do all that I can there. What about my hall? Hm.. it's big room too but no so light. There is green walls and a lot of plants. This place like big garden or forest. I like relax there. So...that's all that i  want to tell you about my flat.