Question

The blades of a wind mill sweep out a circle of
area A. If wind flows with velocity v perpendicular
to blades of wind mill and its density is p, then
the mechanical power received by wind mill is
(1) pAv³/2

(2) PAV²/2

(3) PAV²
(4) 2PAV²​

Answer 1

Answer:

PAV^3/2 here is your answer