In statics, a couple is defined as a. two forces in the same direction separated by a perpendicular distance. b. two forces of equal magnitude c. two forces of equal magnitude acting in the same direction d. two forces of equal magnitude acting in opposite directions

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HHW 6h2. A bracket, ABDE is subjected to three forces as shown. Determine the force-couple about A. All forces act in coordinate directions. 120 N 200 man 100 mm 300 N 160 mm 250 N 50 N

Question #4: Find-an-equipollent-force-passing-through-point-A-and-a-couple-to-replace the combination. of forces-and-moments-in-the-figure-below. A -6 m 20 N 141.4 N -6 m 500 N. m 6 m 50 N

The proper representation of the force of a flexible cable, belt, chain, or rope if the weight of the cable, belt, chain, or rope is negligible is: ) A force along the cable, belt, chain, or rope either in tension or compression. O A force along the cable, belt, chain, or rope in tension. A force with one component along the cable, belt, chain, or rope and another component perpendicular to the cable, belt, chain, or rope. A force in tension along the cable, belt, chain, or rope and a moment about the point at which the cable, belt, chain, or rope is connected to the object.

The proper representation of the force of a flexible cable, belt, chain, or rope if the weight of the cable, belt, chain, or Tope is negligible is: A force in tension along the cable, belt, chain, or rope and a moment about the point at which the cable, belt, chain, or rope is connected to the object. A force along the cable, belt, chain, or rope in tension. A force along the cable, belt, chain, or rope either in tension or compression. A force with one component along the cable, belt, chain, or rope and another component perpendicular to the cable, belt, chain, or rope.

mechanical

4. Find the equilibrant (resultant but with opposite direction) of two 10-N forces acting upon a body when the angle between them is a. 90° b. 120° c. 180°

In the assembly shown, member AB is rigidly attached to the wall while an L bar is pinned to AB at E. Two forces P and Q are acting on the assembly as shown. Force P lies on the x-axis while force Q is applied at point D along a plane parallel to the yz plane. 1. Which of the following quantities is/are zero? (Choices: A. Moment of P about the x-axis ; B. Moment of P about the y-axis ; C. Moment of P about the z-axis) 2. Which of the following best approximates the moment of force Q about point A? 3. Which of the following best approximates the equivalent force-couple set at point A of the applied forces P and Q? Note: F is the resultant force and Cis the resultant couple4. Considering the force diagram of member DE, which gives the complete set of reactions for the support at E? (Note difference of Force and couple reactions)

5. A force-couple system is as follows. Note that all dimensions are in ft. Also draw all pertinent diagrams as part of your solution. a. Scenario 1: If the force system shown is to be replaced by a force-couple system consisting of a force acting at A and a clockwise moment equal to 300 lb-ft, what is the magnitude and sense of M,? b. Scenario 2: If M, = 90 lbft counterclockwise, what should be the magnitude, direction, and point of application along AB of a force F that should be added to the system of forces shown if the system is equivalent to a single horizontal 10-lb force acting east at point B? 4.00 150 lb 70 200 lb 80 lb 3.00 3.00 70° 3.00 50 lb 200 lb Ma B 2.00 130 lb 30 Answer: a. M,=269.3083 lb-ft CW b. F= 194.0149 lb, 52.0548° S of W d= 0.3876 ft right of A