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As shown, a server at a restaurant is carrying a tray that has a glass of water resting on it. (Figure 3) The glass and tray exert a force with magnitude F = 28.5 N on the server's hand. If l = 0.390 m, l2 = 0.290 m, l = 0.130 m, aj = 155 °, and az = 120 °, what is the moment of force about the shoulder joint at point A? Assume that moments acting in the counterclockwise direction about point A are positive whereas moments acting in the clockwise direction are negative.

As shown, a server at a restaurant is carrying a tray that has a glass of water resting on it. (Figure 3) The glass and tray exert a force with magnitude F = 28.5 N on the server's hand. If l = 0.390 m, l2 = 0.290 m, l = 0.130 m, aj = 155 °, and az = 120 °, what is the moment of force about the shoulder joint at point A? Assume that moments acting in the counterclockwise direction about point A are positive whereas moments acting in the clockwise direction are negative.

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I Review Express your answer numerically in Newton-meters to three significant figures. > View Available Hint(s) Learning Goal: To understand the concept of moment of a force and how to calculate it using a scalar formulation. MR. = -4.54 N •m The magnitude of the moment of a force with a magnitude F around a point O is defined as follows: Submit Previous Answers Mo = Fd where d is the force's moment arm. The moment arm is the v Correct perpendicular distance from the axis at point O to the force's line of action. Part C As shown, a server at a restaurant is carrying a tray that has a glass of water resting on it. (Figure 3) The glass and tray exert a force with magnitude F = 28.5 N on the server's hand. If l = 0.390 m, l2 = 0.290 m, l = 0.130 m , aj = 155°, and a2 = 120 °, what is the moment of force about the shoulder joint at point A? Assume that moments acting in the counterclockwise direction about point A are positive whereas moments acting in the clockwise direction are negative. Figure 3 of 3 Express your answer numerically in Newton-meters to three significant figures. • View Available Hint(s) Val AE¢ 1 vec ? M = N. m Submit < Return to Assignment Provide Feedback P Pearson
Transcribed Image Text:I Review Express your answer numerically in Newton-meters to three significant figures. > View Available Hint(s) Learning Goal: To understand the concept of moment of a force and how to calculate it using a scalar formulation. MR. = -4.54 N •m The magnitude of the moment of a force with a magnitude F around a point O is defined as follows: Submit Previous Answers Mo = Fd where d is the force's moment arm. The moment arm is the v Correct perpendicular distance from the axis at point O to the force's line of action. Part C As shown, a server at a restaurant is carrying a tray that has a glass of water resting on it. (Figure 3) The glass and tray exert a force with magnitude F = 28.5 N on the server's hand. If l = 0.390 m, l2 = 0.290 m, l = 0.130 m , aj = 155°, and a2 = 120 °, what is the moment of force about the shoulder joint at point A? Assume that moments acting in the counterclockwise direction about point A are positive whereas moments acting in the clockwise direction are negative. Figure 3 of 3 Express your answer numerically in Newton-meters to three significant figures. • View Available Hint(s) Val AE¢ 1 vec ? M = N. m Submit < Return to Assignment Provide Feedback P Pearson
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