The figure shows a schematic drawing of a vehicular jack that is to be designed to support a maximum mass of 300 kg based on the use of a design factor na = 3.50. The opposite-handed threads on the two ends of the screw are cut to allow the link angle 0 to vary from 15 to 70°. The links are to be machined from AISI 1010 hot-rolled steel bars. Each of the four links is to consist of two bars, one on each side of the central bearings. The bars are to be 350 mm long and have a bar width of w = 30 mm. The pinned ends are to be designed to secure an end-condition constant of at least C = 1.4 for out-of-plane buckling. Find a suitable preferred thickness and the resulting factor of safety for this thickness. W

The figure shows a schematic drawing of a vehicular jack that is to be designed to support a maximum mass of 300 kg based on the use of a design factor na = 3.50. The opposite-handed threads on the two ends of the screw are cut to allow the link angle 0 to vary from 15 to 70°. The links are to be machined from AISI 1010 hot-rolled steel bars. Each of the four links is to consist of two bars, one on each side of the central bearings. The bars are to be 350 mm long and have a bar width of w = 30 mm. The pinned ends are to be designed to secure an end-condition constant of at least C = 1.4 for out-of-plane buckling. Find a suitable preferred thickness and the resulting factor of safety for this thickness. W

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

See similar textbooks

Similar questions

The pedal system shown in the figure is exerted by both an up and down mechanism. These forces are Fmax=350*SN/10 N, Fmin=-150*SN/10 N. It is desired that h/b = 5 seen in the figure. This piece is AISI 1040 and has a maximum tensile stress of 670Mpa and a yield stress of 540Mpa. Known weakening factors are known as kb=ky=kd=0.8. The notch factor for all stresses is assumed to be Kç=1.5. It is desired to last up to its minimum indefinite life at the cross-section measurement point (bxh) shown in the figure. According to Goodman theory, what should be the minimum size (b and h value) of this section in order to meet this condition. SN=89
For the frame shown in Fig. 6-24a, draw the free-body diagrams of (a) the entire frame including the pulleys and cords, (b) the frame without the pulleys and cords, and (c) each of the pulleys. 3E Fx=0 +9 E fy=o 1. FIMD RXAS AT A$D Fing FoRLE componeAB 2. Ge Pits oF POLLEYS EM=0 Cx C By E Ay T. Ay AauLE OF RESOUTAT AT B, C &A 75 lb SKETCH RESULTALT (a) Fueo Manat AT BASE ア(y 7516 OF CULUneCE radius of the pulley at B linch Yadius of the Pulley at c a7s inch 75 lbs 7516 () Distance BE 7inch Distance EA 4.5 inch Distance AV : 3.sinch Ay 6) 7516 マへ

The adjustable height caster is designed to carry 2000 N and operate on the floor that may not be flat. The spring must give sufficient force to keep the wheel touching the floor. A bolt M8x1 is used to adjust the height of the caster. Find the minimum number of thread (t) on nut that made of steel having tensile strenght of 400 MPa considering the factor of safety is 3. F spring Number of thread t = To select a suitable spring from catalog, you need to find the spring rate (spring constant) providing that the free lenght of the spring is 40 mm and the spring will be assembled around the bolt. Compression spring specification can be found in CSC spring catalog on page 12-228)
Pls give right answer with step by step explanation. Design a clamp coupling for a shaft diameter of 60 mm. The torsional moment to be transmitted by this coupling taking in to account over loading as 160 N-m. The number of bolts used are 6 and the allowable stress in the material of the bolt is limited to 5N / m * m ^ 2 . The coefficient of friction between the shaft and muff material is 0.25.
4 A double-threaded power screw with square threads pushes against a load of 3,641 N at a speed of 15 mm/s. The screw has a major diameter of 20 mm and a pitch of 3 mm. The frictional coefficient of the threads is 0.25, and collar friction is negligible. What is the rotational speed of the screw in units of revolutions per minute? Type your answer 2 points
Required information For a bolted assembly with six bolts, the stiffness of each bolt is kb 2 Mibf/in and the stiffness of the members is km = 13 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. It is desired to find the range of torque that a mechanic could apply to initially preload the bolts without expecting failure once the joint is loaded. Assume a torque coefficient of K = 0.2. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the maximum bolt preload that can be applied without exceeding the proof strength of the bolts once the load is applied. The maximum bolt preload that can be applied is Ibf.
Urgent
The corediameter of the double start square threaded screw having a pitch of 12mm is 50 mm. A load of 18kN is lifted through a distance of 180mm. Find the work done(in Joule)in lifting the loadand the efficiency of the screw, when 1. The load rotates with the screw, and 2. The load rests on the loose head which does not rotate with the screw. The external and internal diameter of the bearing surface of the loose head are 60 mm and 10 mmrespectively. The coefficient of friction for the screw is 0.11,whilefor the bearing surface is 0.13.
6- Give the suitable specifications (width, thickness and length) for an open Flat-belt system to transmit a power of (74) hp at (620) rpm to a shaft with 280 rpm. Take a safety factor of (2). The smaller pulley is 250 mm diameter and the center distance is 5 m. the belt material is leather chrome tanned and the pulleys are of cast iron working in wet condition. The belts allowable tensile stress is 4.2 MPa