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To be able to calculate couple moments. Part A A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is called a couple moment As shown, a submarine hatch door is to be opened by applying two oppositely oriented forces of equal magnitude F = 310 N at points A and B on the hatch door wheel, The radii of the wheel's inner and outer rings are ri = 0,500 m and ra = 0,250 m respectively. (Figure 1) Calculate the moments MA and MB about point D for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a clockwise rotation. Express your answers numerically in newton-meters to three significant figures separated by commas. > View Available Hint(s) MA MB,MR = 233,77.5,310 N m Submit Previous Answers gure < 1 of 2 > v Correct Part B Calculate the moments MA and Mg about point A for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positiv produces a clockwise rotation. moment produces a counterclockwise rotation negative ent Express your answers numerically in newton-meters to three significant figures separated by commas. D > View Available Hint(s) B MA. MB, MR 0.000,310,310 N m トー→

To be able to calculate couple moments. Part A A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is called a couple moment As shown, a submarine hatch door is to be opened by applying two oppositely oriented forces of equal magnitude F = 310 N at points A and B on the hatch door wheel, The radii of the wheel's inner and outer rings are ri = 0,500 m and ra = 0,250 m respectively. (Figure 1) Calculate the moments MA and MB about point D for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a clockwise rotation. Express your answers numerically in newton-meters to three significant figures separated by commas. > View Available Hint(s) MA MB,MR = 233,77.5,310 N m Submit Previous Answers gure < 1 of 2 > v Correct Part B Calculate the moments MA and Mg about point A for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positiv produces a clockwise rotation. moment produces a counterclockwise rotation negative ent Express your answers numerically in newton-meters to three significant figures separated by commas. D > View Available Hint(s) B MA. MB, MR 0.000,310,310 N m トー→

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Learning Goal: MA, MB, MR = 0.000,310,310 N. m To be able to calculate couple moments. Previous Answers A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is called a couple moment. Submit Correct The two methods of calculating the couple moment in Parts A and B are equivalent and produce the same resultant moment magnitude MR. Because it only requires one calculation, Part B's method is simpler. Choosing a reference point along one force's line of action reduces the moment arm to zero. Therefore, when calculating a couple moment, choose the reference point that most simplifies the calculation. Part C Figure The same couple moment of 310 N m is required to open the hatch door, independent of where the couple's forces are applied. If the forces are applied at points C and D, what force magnitude F is required to open the hatch door? (Figure 2) < 1 of 2 Express your answer numerically in newtons to three significant figures. F > View Available Hint(s) C vec ? F = N D Submit B F Provide Feedback Next > P Pearson
Transcribed Image Text:Learning Goal: MA, MB, MR = 0.000,310,310 N. m To be able to calculate couple moments. Previous Answers A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is called a couple moment. Submit Correct The two methods of calculating the couple moment in Parts A and B are equivalent and produce the same resultant moment magnitude MR. Because it only requires one calculation, Part B's method is simpler. Choosing a reference point along one force's line of action reduces the moment arm to zero. Therefore, when calculating a couple moment, choose the reference point that most simplifies the calculation. Part C Figure The same couple moment of 310 N m is required to open the hatch door, independent of where the couple's forces are applied. If the forces are applied at points C and D, what force magnitude F is required to open the hatch door? (Figure 2) < 1 of 2 Express your answer numerically in newtons to three significant figures. F > View Available Hint(s) C vec ? F = N D Submit B F Provide Feedback Next > P Pearson
Learning Goal: To be able to calculate couple moments. Part A A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is called a couple moment. As shown, a submarine hatch door is to be opened by applying two oppositely oriented forces of equal magnitude F = 310N at points A and B on the hatch door wheel. The radii of the wheel's inner and outer rings are ri = 0.500 m and r2 = 0.250 m, respectively. (Figure 1) Calculate the moments MA and MB about point D for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a clockwise rotation. Express your answers numerically in newton-meters to three significant figures separated by commas. • View Available Hint(s) MA MB, MR = 233,77.5,310 N m Submit Previous Answers Figure 1 of 2 Correct F Part B Calculate the moments MA and MB about point A for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a clockwise rotation. Express your answers numerically in newton-meters to three significant figures separated by commas. • View Available Hint(s) B F MA, MB, MR = 0.000,310,310 N m
Transcribed Image Text:Learning Goal: To be able to calculate couple moments. Part A A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is called a couple moment. As shown, a submarine hatch door is to be opened by applying two oppositely oriented forces of equal magnitude F = 310N at points A and B on the hatch door wheel. The radii of the wheel's inner and outer rings are ri = 0.500 m and r2 = 0.250 m, respectively. (Figure 1) Calculate the moments MA and MB about point D for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a clockwise rotation. Express your answers numerically in newton-meters to three significant figures separated by commas. • View Available Hint(s) MA MB, MR = 233,77.5,310 N m Submit Previous Answers Figure 1 of 2 Correct F Part B Calculate the moments MA and MB about point A for the forces applied at points A and B. Then, determine the resulting couple moment MR. Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a clockwise rotation. Express your answers numerically in newton-meters to three significant figures separated by commas. • View Available Hint(s) B F MA, MB, MR = 0.000,310,310 N m
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