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March 6, 2015

March 6, 2015

Posted by **Taylor** on Thursday, November 4, 2010 at 5:21pm.

FL (0.021 N·s2/m2)v2

The bat can fly in a horizontal circle by "banking" its wings at an angle è, as shown in the figure below. In this situation, the magnitude of the vertical component of the lift force must equal the bat's weight. The horizontal component of the force provides the centripetal acceleration.

(a) What is the minimum speed that the bat can have if its mass is 0.037 kg?

(b) If the maximum speed of the bat is 11 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?

- Physics -
**bobpursley**, Thursday, November 4, 2010 at 6:00pmlift*cosTheta=mg

lift*sinTheta=mv^2/r

on the first equation

.021v^2*cosTheta=mg

you know m, g, and v^2, solve for Theta

Then on the second, solve for r.

- Physics -
**Taylor**, Thursday, November 4, 2010 at 6:13pmHow do I know v^2? for a)

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