Determine the equivalent spring stiffness constant of the following spring in series and parallel. (20 points each) 1. 250 N/m 175 N/m wwwwwwww 80 N/m www CL

Determine the equivalent spring stiffness constant of the following.

Determine the width and thickness of the leaves (in mm) of a leaf spring using the following specifications: Total load = 140 kN; Number of springs supporting the load = 4; Maximum number of leaves = 10; Span of the spring = 1000 mm; Permissible deflection = 80 mm; Modulus of elasticity, E = 200 kN/mm2; and allowable stress in spring material is 600 MPa.

Three series springs have stiffness constant of 100 N/m each. Determine the spring stiffness equivalent of the springs.   a.)100 N/m b.)300 N/m c.)0.01 N/m d.)33.3 N/m

A hard-drawn steel wire extension spring has a wire diameter of 4mm, an outside coil diameter of 28 mm, and initial tension of 1200 N is applied to the spring. The spring shows an extension of 85 mm. The approximate number of turns is 25. From the given information: Determine the physical parameters of the spring such as mean diameter, spring index, maximum shear stress, total number of turns, Wahl’s stress factor, free length of the spring, and pitch of the coil

A sectional steel cable of 3.00 cm2 has a mass of 2.40 kg per meter. If the cable is  500 m long hanging on a vertical cliff, how far the cable is stretched due to  weighs itself? Known young steel modulus 2.00 x 10¹¹ N/m2 .  (b). If there are two climbers hanging on the cable, determine how far  cable is stretched. The mass of climbers is 60 kg and 70 kg, respectively.

Attached formula sheet Some Young’s moduli (GPa) Aluminum 69 Brass 100 Steel 200 Gold 74 Rubber 0.01 Some linear coefficients of thermal expansion (in 10- 6m/m°C) Aluminum Brass Steel Gold Rubber 21-21 18-19 10-12.5 14 80

The stress-strain diagram of a reinforcement steel having a cross-sectional diameter of 12 mmdiameter and 100 mm gage length is determined after its tensile strength test as follows. Based on the stressstrain diagram determine the followings properties of the material (Poisson’s ratio of the material is 0.32) : a) Modulus of elasticityb) Yield strengthc) Toughnessd) Resiliencee) Shear modulusf) Bulk modulusg) Ductility as described bypercent change in length

A tensile test was conducted on a mild steel& the following data was obtained as follows. Diameter of the steel bar = 3 cm,Gauge length of the bar = 20 cm. Load at elastic limit = 250 kN . Extension at a load of 150kN = 0.21 mm . Maximum load = 380 kN . Total extension = 60 mm . Diameter of the rod at failure = 2. 25 cm Determine: (a) Young’s modulus (b) stress at elastic limit (c)the percentage of elongation (d) Percentage decrease in area.

Determine the young’s modulus value of each material testing, and indicate which material is the shaft made from. Use the experimental data provided from the torsion test conducted on the shafts from three different materials.   The materials included in this test are Aluminium, Brass, and Steel.  Ensure you work through the provided tables and indicate which results correspond to which material.    Dimensions   Diameter (mm) 6 Length (mm) 77   J=  (π ×D^4)/32          G=  TL/θJ   Degree Radian     Material 1 Material 2 Material 3             1 0.017453   1.11 1.83 0.47             1.5 0.02618   1.47 2.46 0.76             2 0.034907   1.84 3.2 1.01             2.5 0.043633   2.72 3.93 1.32             3 0.05236   2.7 4.72 1.65             3.5 0.061087   3.11 5.54 1.99             4 0.069813   3.36 6.4 2.32             4.5 0.07854   3.98 7.27 2.66             5 0.087267   4.41 8.18 3             5.5 0.095993   4.84 9.15…