In a model developed by C J Pennycuick, the power P required by a bird to maintain flight is given by the formula where v is the relative speed of the bird, w is the weight, is the density of air, and S and A are positive constants associated with the birds size and shape What relative speed v will minimize the power required by the bird P W 2pSv 1 PAV

Question: In a model developed by C. J. Pennycuick, the power P required by a bird to maintain flight is given by the formula where

In a model^‡ developed by C. J. Pennycuick, the power P required by a bird to maintain flight is given by the formula

P = W 2pSv 1 + PAV

where v is the relative speed of the bird, w is the weight, ρ is the density of air, and S and A are positive constants associated with the bird’s size and shape. What relative speed v will minimize the power required by the bird?

P = W 2pSv 1 + PAV

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