(a) Calculate the compression (in mm) of the pole. mm (b) Find how much it bends (in mm) and in what direction magnitude mm direction --Select (c) Find the tension (in N) in a guy wire used to keep the pole straight if it is attached to the top of the pole at an angle of 30.0° with the vertical. (Clearly, the guy wire must be in the opposite direction of the bend.) N
The pole in the figure below is at a 90° bend in a power line and is therefore subjected to more shear force than ones in straight parts of the line. The tension in each line is 3.60 x 104 N, at the angles shown.
The pole is 15.0 m tall, has a 24.0 cm diameter, and can be considered to have half the strength of hardwood. Assume Young's modulus to be 7.5 x 109 N/m2 and the shear modulus is 5.0 x 109 N/m2.
(a) Calculate the compression (in mm) of the pole. mm
(b) Find how much it bends (in mm) and in what direction magnitude mm direction --Select
(c) Find the tension (in N) in a guy wire used to keep the pole straight if it is attached to the top of the pole at an angle of 30.0° with the vertical. (Clearly, the guy wire must be in the opposite direction of the bend.) N
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