EXAM/3Q/In the figure below the clamping force on the pipe is (331.7 lb), knowing that a single threaded screw Acmewith major diameter (1 in) is used with coefficient of sliding friction (0.2135) and booth screw and nut are madefrom 1030 - hot rolled Carbon Steel. If the collar has a rolling friction of 0.02 and the mean collar diameter is1.75 in.Determine:1- The tightening and loosening torques. Is it self-locking?2- Thread screw and nut induced stresses.w*7.3+² + Fx (7.3+1+6+43))Fy (3103.3 inFx 4213.3 (sin('in3 in?) 32°hinge"Sin (12")

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Answered: EXAM/3 Q/In the figure below the…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Hi, Please help with the question in the image, also if you need more points then please feel free, thanks
Q1) The V thread of a screw jack has a single start with out side diameter 40 mm and 6 mm pitch. The angle of V is 55° and the load is carried on a swivel head of mean diameter 60 mm. the coefficient of friction between the nut and screw is 0.16 and that between the swivel head and the spindle is 0.1. Calculate the load required to be applied at the end of two levers each of effective length of 500 mm to raise an axial load of 1 KN and the efficiency of the lifting.
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Solve the following problem (NOTE: Use any reasonable DATA not given in the problem.)
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7.An exhaust fan fitted with 900 mm diameter pulley is driven by a flat belt from a 30 kW, 950 r.p.m. squirrel cage motor. The pulley on the motor shaft is 250 mm in diameter and the centre distance between the fan and motor is 2.25 m. The belt is 100 mm wide with a coefficient of friction of 0.25. If the allowable stress in the belt material is not to exceed 2 MPa, determine the necessary thickness of the belt and its total length. Take centrifugal force effect into consideration for density of belt being 950 kg/m3. [
Problem 1 The SERO CHIENS C is recreating rolling large stone columns by animal power and pivot points cut into the center of each of the column. The friction in each pivot point plus the rolling resistance creates a resisting couple of 300 ft*lb (like a rusty bearing). The yoke angle B = 10°. a) Determine how many horses (i.e. horsepower https://en.wikipedia.org/wiki/Horsepower) they need to move a 4600-lb column that is 10 ft long and 2 ft in diameter up a 0 = 5° slope from rest to 3 miles per hour after 15 feet of travel. b) Determine how many horses they need to maintain a constant speed of 3 mph up the slope. Round your answers up to the nearest integer. A fraction of horse doesn't pull very well. Assume the column rolls without slipping.
I need the answer quickly
34 in 3. The following data apply to the C-clamp: a. The screw is ACME with ¾" Diameter b. Coefficient of thread friction = 0.12 c. Coefficient of collar friction = 0.23 d. Mean collar radius = 0.55 in. e. Max. clamping force = 1000 lb Determine: The tightening torque The operator force at the end of the handle (Note: Use table 8-3 to determine the screw pitch (p))
(5) A 2½-in square thread steel screw is used in a common jack screw. There are 2¼TPI. The body of the jack is made of cast iron. The coefficient of friction on the threads is 0.15. The thrust collar at the top has an inside diameter of 1½-in & the outside diameter of 3.0in. The coefficient for the collar is 0.25. The load to be lifted by the jack screw is 2 tons. Determine: (a) the efficiency of the screw only; (b) the efficiency of the screw & the thrust collar; (c) the pull necessary @ the end of a 2.0ft lever to operate this screw jack.
The subject is friction by the theory of mechanics
A holding fixture for a workpiece 37.5 mm thick at the clamp locations is being designed. The detail of one of the clamps is shown in the figure. A spring is required to drive the clamp upward when removing the workpiece with a starting force of 45 N. The clamp screw has an M10x1.25 thread. Allow a diametral clearance of 1.25 mm between it and the uncompressed spring. It is further specified that the free length of the spring should be Lo ≤ 48 mm, the solid height L, S 31.5 mm, and the safety factor when closed solid should be n, 21.2. Starting with d=2 mm, design a suitable helical coil compression spring for this fixture. For A227 HD steel, wire diameters are available in 0.2-mm increments between 0.2 to 3.2 mm. Spherical washer Slot Workpiece - Clamp screw AAAAAA Clamp Groove Pin

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