A0.850-kg block oscillates on the end of a spring whose spring constant is k = 42.0 N/m. The mass moves in a fluid which offers a resistive force F = -bv, where b = 0.625 N - s/m .

1. Find the terminal velocity of a steel sphere of density 7850 kg/m3 and diameter 0.5 mm diameter, falling freely in SAE 30 motor oil, which has a density of 919 kg/m3 and a viscosity of 0.04 N · s/m2 . 2. A bracing wire used on a biplane to strengthen the wing assembly is found to vibrate at 5000 Hz. Estimate the speed of the airplane if the wire has a diameter of 1.2 mm. If the natural frequency of the wire is 500 Hz, at what speed will the wire vibration resonate?  

A cylindrical specimen of some metal alloy of 8 mm in diameter is stressed elastically in tension. A force of 15700 N produces the elastic modulus of 138 GPa of the specimen, the longitudinal strain is: O a. 2.26 O b. 2.23 O c. 2.28 O d. 2.29

Q. 7. (a) (i) Determine the maximum time for rapid closure of pipe 60 cm diameter, 450 m long made of steel (E = 2.07 x 1011 N/m²) with a wall thickness of 1.25 cm. The pipe carries a liquid of specific gravity 0.88 and bulk modulus (4) K = 1.03 x 109 N/m2 flowing at 1 m /sec. (E = Young's modulus of steel) %3D

During heavy lifting, a disk between spinal vertebrae is subjected to a 5250-N compression force.  a. What pressure is created on the disk, in pascals, assuming that the disk has a uniform circular cross section 2.2 cm in radius?  b. What deformation is produced, in centimeters, if the disk is 0.65 cm thick and has a Young’s modulus of 1.65 × 109 N/m2?

Calculate the force (in N) a piano tuner applies to stretch a steel piano wire 7.30 mm, if the wire is originally 0.860 mm in diameter and 1.35 m long. Young's modulus for steel is 210 x 109 N/m2. (No Response)N

8:34 H. W. 3.docx Sketch the stress-strain curve of the following tension test??? In the tension test of a metal fracture occurs at maximum load. The conditions at fracture were: A, = 100 mm' and L = 60 mm, the initial values were: A.= 150 mm and L, = 40 mm.

A light spring of constant 165 N/m rests vertically on the bottom of a large beaker of water.A 4 kg block of wood of density 649 kg/m3is connected to the top of the spring andthe block-spring system is allowed to come tostatic equilibrium.What is the elongation ∆L of the spring?The acceleration of gravity is 9.8 m/s2.Answer in units of cm.

Ex. 6: A solid brass sphere of volume 0.305 m2 is dropped in ocean, where water pressure is 2 x 107 N/m2. The bulk modulus of 6.1 x 1010 N/m2. What is change in volume of sphere ?

A 785 kg load is hung on a wire of length 8 m, cross-sectional area 0.200 x 104 m2, and Young's modulus 8.00 x 1010 N/m-. What is the increase in its length (in mm)? (Answer in 2 decimal places) A Moving to another question will save this response.