The single-threaded screw of thefloor jack has a pitch of 15mm and amean radius of 52.5 mm. The angleof static friction is 8.5.. (a) Determinethe couple C that must be applied tothe screw to start lifting a weight of4000 N. (b) What is the couplerequired to start lowering theweight?4000 N (a) 41.2 N-m, (b) 21.7 N-m(a) 42.5 N-m, (b) 22.9 N-m(a) 41.5 N-m, (b) 21.9 N-m(a) 42.2 N-m, (b) 22.7 N-m

Answered: Image /qna-images/answer/7d0888c2-f36e-4a77-8486-9c3722ec31b9.jpg

Answered: The single-threaded screw of the floor…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

During the operation of a punch press, its flywheel decelerates uniformly from 400 rpm to 200 rpm in 1 sec. The rim of the flywheel weighs 1288 lb. Its inside and outside diameters are 56 in and 60 in. and it is attached to its hub by 6 spokes. what average shearing force is developed between the rim and each spoke during the 1 sec interval? Please show me the solutions and F-B-D.
A steel bracket of solid circular crosssection is subjected to two loads, each of which isP = 4.5 kN at D (see figure). Let the dimension variablebe b = 240 mm.(a) Find the minimum permissible diameter dminof the bracket if the allowable normal stress is110 MPa.(b) Repeat part (a), including the weight ofthe bracket. The weight density of steel is77.0 kN/m3.
What is the internal force in member AB? A. 750 N , T B. 450 N , T C. 750 N , C D. 450 N , CSHOW SOLUTIONS
Two solid steel shafts (shafts) in the figureconnected with gears. Permission for steel shaftsthe permissible shear stress is 7000 psi. BC spindle1.6 in diameter and 1.25 in diameter of EF shaftit is known that the width applied to the shaft at the C pointCalculate the large TC torque.
The shaft is made of two segments. AC has a diameter of 0.5in, and CB has a diameter of 1in. It is fixed at its ends A and B and is subjected to a torque T=500lb*ft. Gsteel= 10.8*103 ksi What is the minimum shear stress in the shaft?
A hollow steel [E = 30,000 ksi] tube (1) with an outside diameter of 3.50 in. and a wall thickness of 0.201 in. is fastened to a solid 2.00-in.-diameter aluminum [E = 10,000 ksi] rod. The assembly is attached to unyielding supports at the left and right ends and is loaded as shown. Assume P=19 kips, Q=13 kips, L1=7 ft, L2=9 ft, and L3=9 ft. Determine(a) the stresses in all parts of the axial structure.(b) the deflections of joints B and C.
4. A steel supplier lists rectangular steel tubing having outside dimensions of 4 by 2 in.and a wall thickness of 0.109 in. What is the maximum torque that can be applied tosuch a stube if the shear stress is to be limited to 6000 psi. For this torque, computethe angle of twist of the tube over a length of 6.5 ft
A hollow tube ABCDE constructed of monel-metal is subjected to five torques acting in the directions shown. The tube has an outside diameter d2= 1.0in. The allowable shear stress is 14,950psi and the allowable rate of twist is 2.45degree/ft. Determine the maximum permissible inside diameter d1 of the tube in inches. Use G= 9500ksi.
Calculate Tension BD if P = 100 kN.
Of the following solid shafts diameter, which is the smallest that can be used for the rotor of a 6 hp motor operating at 4500 rpm, if the maximum shear stress for the shaft is 8500 psi?A. 5/16 inB. 3/8 inC. 1/2 inD. 1 in
NEED HELP ASAP PLEASE!!! A horizontal shelf AD of length L = 740 mm, width b = 360 mm, and thickness t = 30 mm is supported by brackets at B and C [see part (a) of the figure]. The brackets are adjustable and may be placed in any desired positions between the ends of the shelf. A uniform load of intensity q. which includes the weight of the shelf itself, acts on the shelf [see part (b) of the figure]. A L (a) D L (b) Determine the maximum permissible value of the load if the allowable bending stress in the shelf is Oallow = 7.5 MPa and the position of the supports is adjusted for maximum load-carrying capacity. Round to two decimal places. qmax kN/m
A beam cast monolithically with the slab thickness of 110 has a span of 4 m spaced at 6 m center to center. The width of the web is 300 mm and effective depth of 500 mm. It is reinforced on the tension side with 8-20 mm Φ rebars. Fc’ = 30 MPa fy = 310 MPa 1. Which gives the effective width of flange? a. 2000 mm b. 1500 mm c. 2500 mm d. 1000 mm 2. Which gives the depth of the compression stress block? a. 30.55 mm b. 32.56 mm c. 12.45 mm d. 42.14 mm

SEE MORE QUESTIONS

Recommended textbooks for you

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Fundamentals of Structural Analysis

Civil Engineering

ISBN:

9780073398006

Author:

Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning

Publisher:

McGraw-Hill Education

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

The single-threaded screw of the floor jack has a pitch of 15mm and a mean radius of 52.5 mm. The angle of static friction is 8.5.. (a) Determine the couple C that must be applied to the screw to start lifting a weight of 4000 N. (b) What is the couple required to start lowering the weight? 4000 N