A 50-story building is being planned. It is to be 180.0 m high with a base 46.0 m by 76.0 m. Its total mass will be about 1.8 x 107 kg, and its weight therefore about 1.8 x 10° N. Suppose a 200-km/h wind exerts a force of 950 N/m² over the 76.0-m-wide face (Fig. 9–80). Calculate the torque about the potential pivot point, the rear edge_ of the building (where Fp acts in Fig. 9–80), and determine whether the building will topple. Assume the total force of the wind acts at I口 the midpoint of the build- ing's face, and that the building is not anchored in bedrock. [Hint: Fe in Fig. 9-80 represents the force that the Earth would ... mg exert on the building in the case where the building would just begin to tip.] FIGURE 9-80 Forces on a building subjected to wind (FA), gravity (mg), and the force FE on the building due to the Earth if the building were just about to tip. Problem 61.

A 50-story building is being planned. It is to be 180.0 m high with a base 46.0 m by 76.0 m. Its total mass will be about 1.8 x 107 kg, and its weight therefore about 1.8 x 10° N. Suppose a 200-km/h wind exerts a force of 950 N/m² over the 76.0-m-wide face (Fig. 9–80). Calculate the torque about the potential pivot point, the rear edge_ of the building (where Fp acts in Fig. 9–80), and determine whether the building will topple. Assume the total force of the wind acts at I口 the midpoint of the build- ing's face, and that the building is not anchored in bedrock. [Hint: Fe in Fig. 9-80 represents the force that the Earth would ... mg exert on the building in the case where the building would just begin to tip.] FIGURE 9-80 Forces on a building subjected to wind (FA), gravity (mg), and the force FE on the building due to the Earth if the building were just about to tip. Problem 61.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 74P: When tightening a bolt, you push perpendicularly on a wrench with a force of 165 N at a distance of...

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