11th Edition

ISBN: 9781337620338

Author: SERWAY/VUILLE

Publisher: CENGAGE Learning Custom Publishing

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A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal for…

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Textbook Question

Chapter 7, Problem 72AP

The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by

F_l ≤ (0.018 N · s²/m²) v²

The bat can fly in a horizontal circle by “banking” its wings at an angle θ, as shown in Figure P7.72. In this situation, the magnitude of the vertical component of the lift force must equal the bat’s weight. The horizontal component of the

Chapter 7, Problem 72AP, The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary

Figure P7.72.

force provides the centripetal acceleration. (a) What is the minimum speed that the bat can have if its mass is 0.031 kg? (b) If the maximum speed of the bat is 10 m/s, what is the maximum banking angle that allows the bat to stay in a horizontal plane? (c) What is the radius of the circle of its flight when the bat flies at its maximum speed? (d) Can the bat turn with a smaller radius by flying more slowly?

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Chapter 7 Solutions

College Physics 11E Global Edition

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