12th + NEET | Top 30 MCQ's | पुष्पीय पादप में जनन | Part 07 | Biology | By Yogesh Sir | Doubtnut

A uniform rectangular plate is hanging vertically downward from a hinge that passes along its left edge. By blowing air at 12 m//s over the top of the plate only, it is possible to keep the plate in a horizontal position, as illustrated in part (a) of the drawing. To what value of speed should the air be blown so that the plate is kept at a 30^(@) angle with respect to the vertical, as in part (b) of the drawing ?