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You pass by a building site and see a crane that lifts loads to upper floors of a building under construction. You wonder about the magnitude of the forces that support the beam of the crane. You snap a photograph of the crane with your smartphone. Back at home, you make a drawing of the crane from your photo. Your drawing is shown in the following figure. You estimate the lengths d and I by measuring the distance between floors on a point of the building the same distance from your smartphone as the crane and using that distance as a scale for the drawing. This tells you that d-1.00 m and f-6.00 m. You have drawn the force vector for the gravitational force on the beam of the crane, but then you realize you don't know where the center of mass of the beam is located. You run back to the construction office and explain your interest. You ask the construction foreman about the crane, and he tells you that the crane itself has a mass of m, 2,850 kg and the load it was lifting when you took the photograph has a mass of m₂ = 11,050 kg. You then ask the foreman about the location of the center of mass of the beam. Amused by your interest, he consults his documents and finds that the center of mass of the crane is located x-2.00 m horizontally to the right of point A. He also tells you that the pin at A is on a bearing and essentially frictionless, and the point 8 against which the crane pushes is smooth. Thanking the foreman and running home. you sit at your desk and determine the forces on the crane at points A and B. 1+

You pass by a building site and see a crane that lifts loads to upper floors of a building under construction. You wonder about the magnitude of the forces that support the beam of the crane. You snap a photograph of the crane with your smartphone. Back at home, you make a drawing of the crane from your photo. Your drawing is shown in the following figure. You estimate the lengths d and I by measuring the distance between floors on a point of the building the same distance from your smartphone as the crane and using that distance as a scale for the drawing. This tells you that d-1.00 m and f-6.00 m. You have drawn the force vector for the gravitational force on the beam of the crane, but then you realize you don't know where the center of mass of the beam is located. You run back to the construction office and explain your interest. You ask the construction foreman about the crane, and he tells you that the crane itself has a mass of m, 2,850 kg and the load it was lifting when you took the photograph has a mass of m₂ = 11,050 kg. You then ask the foreman about the location of the center of mass of the beam. Amused by your interest, he consults his documents and finds that the center of mass of the crane is located x-2.00 m horizontally to the right of point A. He also tells you that the pin at A is on a bearing and essentially frictionless, and the point 8 against which the crane pushes is smooth. Thanking the foreman and running home. you sit at your desk and determine the forces on the crane at points A and B. 1+

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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You pass by a building site and see a crane that lifts loads to upper floors of a building under construction. You wonder about the magnitude of the forces that support the beam of the crane. You snap a photograph of the crane with your smartphone. Back at home, you make a drawing of the crane from your photo. Your drawing is shown in the following figure. -XCM You estimate the lengths d and I by measuring the distance between floors on a point of the building the same distance from your smartphone as the crane and using that distance as a scale for the drawing. This tells you that d = 1.00 m and f= 6.00 m. You have drawn the force vector for the gravitational force on the beam of the crane, but then you realize you don't know where the center of mass of the beam is located. You run back to the construction office and explain your interest. You ask the construction foreman about the crane, and he tells you that the crane itself has a mass of m, 2,850 kg and the load it was lifting when you took the photograph has a mass of m₂ = 11,050 kg. You then ask the foreman about the location of the center of mass of the beam. Amused by your interest, he consults his documents and finds that the center of mass of the crane is located XCM = 2.00 m horizontally to the right of point A. He also tells you that the pin at A is on a bearing and essentially frictionless, and the point 8 against which the crane pushes is smooth. Thanking the foreman and running home, you sit at your desk and determine the forces on the crane at points A and B. + 1+
Transcribed Image Text:You pass by a building site and see a crane that lifts loads to upper floors of a building under construction. You wonder about the magnitude of the forces that support the beam of the crane. You snap a photograph of the crane with your smartphone. Back at home, you make a drawing of the crane from your photo. Your drawing is shown in the following figure. -XCM You estimate the lengths d and I by measuring the distance between floors on a point of the building the same distance from your smartphone as the crane and using that distance as a scale for the drawing. This tells you that d = 1.00 m and f= 6.00 m. You have drawn the force vector for the gravitational force on the beam of the crane, but then you realize you don't know where the center of mass of the beam is located. You run back to the construction office and explain your interest. You ask the construction foreman about the crane, and he tells you that the crane itself has a mass of m, 2,850 kg and the load it was lifting when you took the photograph has a mass of m₂ = 11,050 kg. You then ask the foreman about the location of the center of mass of the beam. Amused by your interest, he consults his documents and finds that the center of mass of the crane is located XCM = 2.00 m horizontally to the right of point A. He also tells you that the pin at A is on a bearing and essentially frictionless, and the point 8 against which the crane pushes is smooth. Thanking the foreman and running home, you sit at your desk and determine the forces on the crane at points A and B. + 1+
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