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sgillespie006p3ute8
25.11.2019 •
Physics
A20.0-m-tall hollow aluminum flagpole is equivalent in strength to a solid cylinder 4.00 cm in diameter. a strong wind bends the pole as much as a horizontal 900.0-n force on the top would do. how far to the side does the top of the pole flex?
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Ответ:
To solve the problem it is necessary to apply the concepts related to deflection in a metal.
By definition the deflection is given by the equation
Where
A =Area
s = shear modulus
To calculate the area we must obtain the radius generated by the deflection, that is to say
r = \frac{D}{2}
Where,
D = Diameter
r = Radius of the aluminum flagpole
Therefore the cross sectional area of the pole is given as
Replacing our values at the previous equation we have that
Therefore the deflection in the pole is 0.57mm
Ответ:
Rearranging it, we get;
Where a is the acceleration, f is the force, and m is the mass