While an oil well is being drilled at a depth of 2000 m, it is observed that the top of the 200-mm-diameter steel drill pipe (G= 77.2 GPa)rotates through 2.5 revolutions before the drilling bit starts to operate. Determine the maximum shearing stress caused in the pipe bytorsion.The maximum shearing stress caused in the pipe by torsion isMPа.

Answered: Image /qna-images/answer/eea54b95-2e4f-47b6-b3f3-0cbec78a5fa1.jpg

Answered: While an oil well is being drilled at a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The driveshaft of an automobile is being designed to transmit 242 hp at 2980 rpm. Determine the minimum diameter d required for a solid steel shaft if the allowable shear stress in the shaft is not to exceed 6700 psi. Answer: d = in.
A steel shaft with a length of 3.00 m. One meter of the steel is contained in a brass tube and firmly attached. The diameter d1 = 70 mm and the diameter d2 = 90 mm. Brass G = 39GPa and steel G = 77.20 GPa. Determine: The torque that can be applied if the deformation at one end is 10 degrees. Answer: T = 8.64 kN – m The torque that can be applied if the maximum shear stress in brass is 70MPa and in steel is 110MPa. Answer: T = 6.352 kN – m Recommendation: analyze by segments. The first segment is only brass, then the composite part between brass and steel, and the last part only steel. In the composite segment, use only one material. In this same segment, equalize the deformations.
The turbine develops 150 kW of power, which is transmitted to the gears such that both C and D receive an equal amount. If the rotation of the 100-mm-diameter A-36 steel shaft is v = 500 rev>min., determine the absolute maximum shear stress in the shaft and the rotation of end B of the shaft relative to E. The journal bearing at E allows the shaft to turn freely about its axis.
Two shaft of diameter 50 mm are joined by a rigid flange coupling and transmit a torque in such a way that the shear stress in shaft does not exceed 100 N/mm2. If six bolt are used to join the flange and the bolt circle is 150 mm in diameter. Determine the diameter of the bolt if the permitted shear stress in the bolt is 80N/mm2.
Two forces , each of magnitude P, are applied to the wrench. The diameter of the steel shaft AB is 30 mm. Determine the largest allowable value of P if the shear stress in the shaft is not to exceed 120 MPa and its angle of twist is limited to 7 deg. Use G=83 GPa for steel 300 mm 600 mm
The shaft is made of A992 steel and has an allowable shear stress of 95 MPa. When the shaft is rotating at 420 rpm, the motor supplies 11 kW of power, while gears A and B withdraw 7 kW and 4 kW, respectively. Determine the required minimum diameter of the shaft to the nearest millimeter. Also, find the rotation of gear A relative to C. (G=75 GPa) a. D=50.9589mm; 0.000004 rad b. D=50.9589mm; 0.0369 rad c. D=26mm; 0.000004 rad 300 mm d. D=26mm; 0.0369rad e. None of the above 300 mm B
The pressure tank shown has an outside diameter of 100 mm and a wall thickness of 10 mm. Determine the absolute maximum shear stress at point H on the inner surface if the internal gauge pressure is 1.25 MPa and the applied torque is 375N•m. Show the stress state in matrix form and calculate eigenvalues.
A machinery uses a helical tension spring with wire diameter of 3 mm and coil outside diameter of 35 mm. The spring has 9 total coils. The design shear stress is 500 MPa and the modulus of rigidity is 82 GPa. Determine the force that causes the body of the spring to its shear stress in N. Consider ground ends.
The drive shaft AB of an automobile is made of a steel having allowable shear stress of tallow = 8 ksi. If the outer diameter of the shaft is 2.5 in. and the engine delivers 200 hp to the shaft when it is turning at 1140 rev>min, determine the minimum required thickness of the shaft’s wall.
The solid 50-mm-diameter shaft is subjected to the torques applied to the gears. Determine the absolute maximum shear stress in the shaft.
Determine the maximum shearing stress in a bronze helical spring composed of 19 turns of 0.96-in.-diameter wire on a mean radius of 3.53 in. when the spring is supporting a load of 516 Ib. Use the equation for heavy spring and G = 6 x 10° psi. (Answer must be in Ib per square inch) Round your answer to 2 decimal places. Add your answer
The solid steel shaft has a diameter of 35 mm. Determine the absolute maximum shear stress in the shaft.

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