Physics 170 Worksheet Week 3
(Sections 3.1 - 3.4, 4.1, 4.2)
Question 1 (3-24) The springs on the rope assembly are originally unstretched when θ= 0o. Determine the tension in each rope when F= 90 lb. Neglect the size of the pulleys at Band Question 2 (3-43) Determine the magnitude and direction of the forceP required to keep the concurrent force system in equilibrium.
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Question 3 (3-53 12thed) Determine the force acting along the axis of each of the three struts needed to hold the 500 kg block in equilibrium. Question 4 a)Determine the tension developed in the cables AB and AC and the force developed along the strut AD for equilibrium of the 400 lb crate. (3-54) b)The tension developed in each of the cables cannot exceed 300 lbs. (3-55)a.Determine the largest weight of crate that can be supported. b.Determine the force developed along strut AD
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Question 5 a)Determine the tension developed in cables AB, AC and AD for equilibrium of the 75 kg load. (3-58)b)The tension developed in each of the cables cannot exceed 1 kN. Determine the largest mass of the cylinder that can be supported. (3-59)Question 6 (3-75 12thed) Determine the magnitude of Pand the coordinate direction angles of F3required for equilibrium of the particle. Note that F3acts in the octant shown.