As shown, a submarine hatch door is to be opened by applying two oppositely oriented forces of equal magnitude at points A and B on the hatch door wheel. The radii of the wheel's inner and outer rings are = 2.00 and = 0.700 , respectively. (Figure 1) Calculate the moments and about point D for the forces applied at points A and B. Then, determine the resulting couple moment . Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a clockwise rotation.
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Chapter 2, Problem 2/053 For F-70 lb, compute the combined moment of the two forces about (a) point o, (b) point C, (c) point D. The moments are positive if counterclockwise, negative if clockwise. F ft y, 15 A (-10, 17) D (19, 0) 0 I B (191-7) C (-13, -11) 5ฯ Answer: (a) Mo = (b) Mc= (c) MD= lb-ft lb-ft
A stool at a restaurant is anchored to the floor. When a customer
is in the process of sitting down, a horizontal force with
magnitude
F1
is exerted at the top of the stool support as shown in the figure.
(Figure
1) When the customer is seated, a vertical force with
magnitude
F2
is exerted on the stool support. If the maximum moment magnitude
that the stool support can sustain about point A is
MA
= 180lb?ft
, what is...
Question 3 points Save Answer An angle bracket is subjected to the forces and couple as shown below. Consider clockwise from horizontal as to be positive for moments and angles. Detemine the equivalent force-couple system at A. 30cm 200N 150 N 13 em 15 cm 50 N-m 150 N 92 N at 174.1-103 Nm 114 N at 15350 Nm 292 N at-5.9, 103 Nm 333 N at 42.9, 53 Nm Question2 3 points Save Answer The loading shown requires a...
Physics 120 Worksheet 9- Moment of Inertia and Statics Problem 4. Analyzing Torque- You take the wheel from Problem 3 and drill a tiny hole through the center of the x so you carn mount the wheel in an axle. Now you tie three different pieces of string to the wheel and apply the three tension forces of IN to the wheel. Fri is applied to the top of the wheel and points left. Frz is applied to the bottom...
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CONCEPTUAL QUESTIONS: (Total Points 10, 1 points each question) 1- A plate is supported by a bal-and-socket joint at A, a roller joint at B, and a cable at C. How many unknown support reactions are there in this problem? 300 N 400 N i m A) Four forces and two moments B) Six forces C) Five forces D) Four forces and one...
The cantilever beam of length 3L is subject to concentrated loads P and 2P and has the thin-walled cross-section illustrated below. The cross-section has uniform thickness t and moment of inertia with respect to the centroidal z-axis given by I = 3140 t4. Use t = 5 mm, L = 135 mm and P= 6 kN. 2P H 10 t 5t A P 10 t 22 L 10 t 1) Determine the numerical value of the shear force and bending...
Part 1 Use the graphical method to construct the shear-force and bending moment diagrams for the beam shown. Let a-3.s ftt, he eshe 10.5 kipe/ft and p 105 kigs. Construct the shear-force and bending-moment diagrams on paper and use the results to subsequent parts of this GO exercise. For this loading, calculate the reaction forces Ay and Ey acting on the beam. Positive values for the reactions are indicated by the directions of the red arrows shown on the free-body...
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INVESTIGATION 10 ROTATIONAL MOTION OBJECTIVE To determine the moment of inertia I of a heavy composite disk by plotting measured values of torque versus angular acceleration. THEORY Newton's second law states that for translational motion (motion in a straight line) an unbalanced force on an object results in an acceleration which is proportional to the mass of the object. This means that the heavier...