problem05_14

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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5.14: a) In level flight, the thrust and drag are horizontal, and the lift and weight are vertical. At constant speed, the net force is zero, and so f F = and . L w = b) When the plane attains the new constant speed, it is again in equilibrium and so the new values of
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Unformatted text preview: the thrust and drag, F ′ and f ′ , are related by f F ′ = ′ ; if . 2 , 2 f f F F = ′ = ′ c) In order to increase the magnitude of the drag force by a factor of 2, the speed must increase by a factor of 2 ....
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