Mechanics of Materials (MindTap Course List)
9th Edition
ISBN: 9781337093347
Author: Barry J. Goodno, James M. Gere
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 1.9.5P
A steel pad supporting heavy machinery rests on Four short, hollow, cast iron piers (see figure). The ultimate strength of the cast iron in compression in 50 ksi. The outer diameter of the piers is d = 4.5 in, and the wall thickness is t = 0.40 in.
Using a factor of safety of 3.5 with respect to the ultimate strength, determine the total load P that can be supported by the pad.
Expert Solution & Answer
Trending nowThis is a popular solution!
Chapter 1 Solutions
Mechanics of Materials (MindTap Course List)
Ch. 1 - Find support reactions at A and B and then...Ch. 1 - Find support reactions at A and B and then...Ch. 1 - Segments AB and BC of beam ABC are pin connected a...Ch. 1 - Segments A B and BCD of beam A BCD are pin...Ch. 1 - Segments AB and BCD of beam ABCD are pin connected...Ch. 1 - Consider the plane truss with a pin support at...Ch. 1 - A plane truss has a pin support at A and a roller...Ch. 1 - A plane truss has a pin support at F and a roller...Ch. 1 - Find support reactions at A and B and then use the...Ch. 1 - Find support reactions at 4 and Band then use the...
Ch. 1 - Repeat 1.3-9 but use the method of sections go...Ch. 1 - Repeat 1.3-10 but use the method of sections to...Ch. 1 - A space truss has three-dimensional pin supports...Ch. 1 - A space truss is restrained at joints O, A. B. and...Ch. 1 - 1.3-15 A space truss is restrained at joints A, B,...Ch. 1 - A space truss is restrained at joints A, B. and C,...Ch. 1 - A stepped shaft ABC consisting of two solid,...Ch. 1 - A stepped shaft ABC consisting of two solid,...Ch. 1 - A plane frame is restrained al joints A and C, as...Ch. 1 - A plane Frame is restrained at joints A and D, as...Ch. 1 - Find support reactions at A and D and then...Ch. 1 - Find support reactions at A and D and then...Ch. 1 - ,3-23 A 200-lb trap door (AD) is supported by a...Ch. 1 - A plane frame is constructed by using a pin...Ch. 1 - A plane Frame with pin supports at A and E has a...Ch. 1 - A plane frame with a pin support at A and roller...Ch. 1 - A 150-lb rigid bar AB. with friction less rollers...Ch. 1 - A plane frame has a pin support at A and roller...Ch. 1 - A special vehicle brake is clamped at O when the...Ch. 1 - Space frame A BCD is clamped at A, except it is...Ch. 1 - Space Frame ABC is clamped at A, except it is free...Ch. 1 - A soccer goal is subjected to gravity loads (in...Ch. 1 - An elliptical exerciser machine (see figure part...Ch. 1 - A mountain bike is moving along a flat path at...Ch. 1 - A hollow circular post ABC (see figure) supports a...Ch. 1 - A circular nylon pipe supports a downward load PA=...Ch. 1 - A circular tube AB is fixed at one end and free at...Ch. 1 - A force P of 70 N is applied by a rider to the...Ch. 1 - A bicycle rider wants to compare the effectiveness...Ch. 1 - A circular aluminum tube with a length of L = 420...Ch. 1 - The cross section of a concrete corner column that...Ch. 1 - A car weighing 130 kN when fully loaded is pulled...Ch. 1 - Two steel wines support a moveable overhead camera...Ch. 1 - A long re Lai nine: wall is braced by wood shores...Ch. 1 - A pickup truck tailgate supports a crate where Wc=...Ch. 1 - Solve the preceding problem if the mass of the...Ch. 1 - An L-shaped reinforced concrete slab 12 Ft X 12...Ch. 1 - A crane boom of mass 450 leg with its center of...Ch. 1 - Two gondolas on a ski lift are locked in the...Ch. 1 - A round bar ABC of length 2L (see figure) rotates...Ch. 1 - Two separate cables AC and BC support a sign...Ch. 1 - Imagine that a long steel wire hangs vertically...Ch. 1 - A steel riser pipe hangs from a drill rig located...Ch. 1 - Three different materials, designated A, B. and C,...Ch. 1 - The strength-to-weight ratio of a structural...Ch. 1 - A symmetrical framework consisting of three...Ch. 1 - A specimen of a methacrylate plastic is tested in...Ch. 1 - The data shown in the accompanying table are From...Ch. 1 - A bar made of structural steel having the...Ch. 1 - A bar of length 2.0 m is made of a structural...Ch. 1 - A bar made of structural steel having the...Ch. 1 - A circular bar of magnesium alloy is 750 mm long....Ch. 1 - An aluminum bar has length L = 6 ft and diameter d...Ch. 1 - A continuous cable (diameter 6 mm) with tension...Ch. 1 - A wine of length L = 4 ft and diameter d = 0.125...Ch. 1 - A high-strength steel bar used in a large crane...Ch. 1 - A round bar of 10 mm diameter is made of aluminum...Ch. 1 - A polyethylene bar with a diameter d, = 4.0 in. is...Ch. 1 - A square plastic bar (length LP,side dimension...Ch. 1 - A polyethylene bar having rectangular cross...Ch. 1 - A circular aluminum tube of length L = 600 mm is...Ch. 1 - A bar of monel metal with a length L = 9 in. and a...Ch. 1 - A tensile test is performed on a brass specimen 10...Ch. 1 - A hollow, brass circular pipe ABC (see figure)...Ch. 1 - Three round, copper alloy bars having the same...Ch. 1 - An angle bracket having a thickness t = 0.75 in....Ch. 1 - Truss members supporting a roof are connected to a...Ch. 1 - The upper deck ala foothill stadium is supported...Ch. 1 - The inclined ladder AB supports a house painter...Ch. 1 - The Force in the brake cable of the V-brake system...Ch. 1 - A steel plate of dimensions 2.5 × l.5 × 0.08 m and...Ch. 1 - A special-purpose eye boll with a shank diameter d...Ch. 1 - An elastomeric bearing pad consisting of two steel...Ch. 1 - A joint between iwo concrete slabs A and B is...Ch. 1 - A steel punch consists of two shafts: upper shaft...Ch. 1 - A joint between two glass plates A and B is filled...Ch. 1 - A punch for making a slotted hole in ID cards is...Ch. 1 - A steel riser pipe hangs from a drill rig located...Ch. 1 - A flexible connection consisting of rubber pads...Ch. 1 - .15 A hitch-mounted bicycle rack is designed to...Ch. 1 - The clamp shown in the figure supports a load...Ch. 1 - A shock mount constructed as shown iu the figure...Ch. 1 - Prob. 1.8.18PCh. 1 - A spray nozzle for a garden hose requires under a...Ch. 1 - A single steel strut AB with a diameter (a) Find...Ch. 1 - The top portion of a pole saw used to trim (a)...Ch. 1 - A cargo ship is tied down to marine boll arts at a...Ch. 1 - A basketball player hangs on the rim after (a)...Ch. 1 - A bicycle chain consists of a series of small...Ch. 1 - A bar of solid circular cross section is loaded in...Ch. 1 - .2 A torque T0is transmitted between two flanged...Ch. 1 - A tie-down on the deck of a sailboat consists of a...Ch. 1 - Two steel tubes are joined at B by four pins (dp=...Ch. 1 - A steel pad supporting heavy machinery rests on...Ch. 1 - A steel pad supporting heavy machinery rests on...Ch. 1 - A steel riser pipe hangs from a drill rig....Ch. 1 - The rear hatch of a van (BDCG in figure part a) is...Ch. 1 - A lifeboat hangs from two ship's davits. as shown...Ch. 1 - A cable and pulley system in the figure part a...Ch. 1 - A ship's spar is attached at the base of a mast by...Ch. 1 - What is the maximum possible value of the clamping...Ch. 1 - A metal bar AB of a weight Ills suspended by a...Ch. 1 - A plane truss is subjected to loads 2P and P at...Ch. 1 - A solid bar of circular cross section (diameter d)...Ch. 1 - A solid steel bar of a diameter d1= 60 mm has a...Ch. 1 - A sign of weight W is supported at its base by...Ch. 1 - The piston in an engine is attached to a...Ch. 1 - An aluminum tube is required to transmit an axial...Ch. 1 - A copper alloy pipe with a yield stress aY= 290...Ch. 1 - A horizontal beam AB with cross-sectional...Ch. 1 - Lateral bracing for an elevated pedestrian walkway...Ch. 1 - A plane truss has joint loads P, 2P, and 3P at...Ch. 1 - Cable DB supports canopy beam OABC as shown in the...Ch. 1 - Continuous cable ADS runs over a small...Ch. 1 - A suspender on a suspension bridge consist of a...Ch. 1 - A square steel tube of a length L = 20 ft and...Ch. 1 - A cable and pulley system at D is used to bring a...Ch. 1 - A pressurized circular cylinder has a sealed cover...Ch. 1 - A tubular post of outer diameter d2is guyed by two...Ch. 1 - A large precast concrete panel for a warehouse is...Ch. 1 - A steel column of hollow circular cross section is...Ch. 1 - An elevated jogging track is supported at...Ch. 1 - A flat bar of a widths b = 60 mm and thickness t =...Ch. 1 - Continuous cable A DB runs over a small friction...Ch. 1 - Continuous cable ADB runs over a small friction...Ch. 1 - Two bars AC and BC of the same material support a...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A round bar of 10 mm diameter is made of aluminum alloy 7075-T6 (see figure). When the bar is stretched by axial forces P, its diameter decreases by 0.0 16 mm. Find the magnitude of the load P. Obtain the material properties from Appendix 1.arrow_forwardA long, rectangular copper bar under a tensile load P hangs from a pin that is supported by two steel posts (see figure). The copper bar has a length of 2.0 m, a cross-sectional area of4S00 mm", and a modulus of elasticity Ec= 120 GPa. Each steel post has a height of 0.5 m, a cross-sectional area of 4500 mm2, and a modulus of elasticity E = 200 GRa. (a) Determine the downward displacementarrow_forwardA steel pad supporting heavy machinery rests on four short, hollow, cast iron piers (see figure). The ultimate strength of the cast iron in compression is 400 MPa. The total load P that may be supported by the pad is 900 kN. Using a factor or safely 3.0 with respect to ultimate strength, determine the outer diameter of the pier if the thickness, is of the cross section is 12 mm.arrow_forward
- A sign for an automobile service station is supported by two aluminum poles of hollow circular cross section, as shown in the figure. The poles are being designed to resist a wind pressure of 75 lb/ft" against the full area of the sign. The dimensions of the poles and sign are hx= 20 ft, /r =5 ft, and h = 10 ft. To prevent buckling of the walls of the poles, the thickness e is specified as one-tenth the outside diameter d. (a) Determine the minimum required diameter of the poles based upon an allowable bending stress of 7500 psi in the aluminum. (b) Determine the minimum required diameter based upon an allowable shear stress of 300 psi.arrow_forwardTruss members supporting a roof are connected to a 26-mm-thick gusset plate by a 22-mm diameter pin, as shown in the figure and photo. The two end plates on the truss members are each 14 mm thick. (a) If the load P = 80 kN, what is the largest bearing stress acting on the pin? (b) If the ultimate shear stress for the pin is 190 MPa, what force Pult is required to cause the pin to fail in shear? Disregard friction between the plates.arrow_forwardA W14 × 53 wide-flange column of a length L = 15 ft is fixed at the base and free at the top (see figure). The column supports a centrally applied load = 120 kips and a load P2= 40 kips supported on a bracket. The distance from the centroid of the column to the load P2is s = 12 in. Also, the modulus of elasticity is E = 29,000 ksi, and the yield stress is y= 36 ksi. Calculate the maximum compressive stress in the column, Determine the factor of safety with respect to yielding.arrow_forward
- A tie-down on the deck of a sailboat consists of a bent bar boiled at both ends, as shown in the figure. The diameter dBof the bar is 1/4 in., the diameter D Wof the washers is 7/8 in., and the thickness is of the fiberglass deck is 3/8 in. If the allowable shear stress in the fiberglass is 300 psi, and the allowable bearing pressure between the washer and the fiberglass is 550 psi, what is the allowable load P allowon the tie-down?arrow_forwardA stepped bar ACB with circular cross sections is held between rigid supports and loaded by an axial force P at midlength (see figure). The diameters for the two parts of the bar are d1= 20 ram and d2= 25 mm, and the material is elastoplastic with yield stress s = 250 MPs. Determine the plastic load Pp.arrow_forwardA two-story building has steel columns AB in the first floor and BC in the second floor, as shown in the figure. The roof load P:equals 400 KN, and the second-floor load P-, equals 720 kN. Each column has a length L = 3.75 m. The cross-sectional areas of the first- and second-floor columns are 11,000 mm" and 3900 mm", respectively. (a) Assuming that E = 206 GPa. determine the total shortenings aof the two columns due to the combined action of the loads Ptand P,. (b) How much additional load P0can be placed at t he top of t he column (point C) if t he total shortening: SACis not to exceed 4.0 mm?arrow_forward
- Rigid bar ACB is supported by an elastic circular strut DC having an outer diameter of 15 in. and inner diameter of 14.4 in. The strut is made of steel with a modulus elasticity of E = 29,000 ksi. Point load P = 5 kips is applied at B. Calculate the change in length of the circular strut DC. What is the vertical displacement of the rigid bar at point B?arrow_forwardA column, pinned at top and bottom, is made up of two C 6 x 13 steel shapes (see figure) that act together. Find the buckling load (kips) if the gap is zero. Find required separation distance d(inches) so that the buckling load is the same in y and z directions. Assume that E = 30,000 ksi and L = 18 ft. Note that distance d is measured between the centroids of the two C shapes.arrow_forwardThe roof over a concourse at an airport is supported by the use of pretensioned cables. At a typical joint in the roof structure, a strut AB is compressed by the action of tensile forces Fin a cable that makes an angle = 75° with the strut (see figure and photo). The strut is a circular tube of steel (E = 30,000 ksi) with outer diameter d2= 2.5 in. and inner diameter d1= 2.0 in. The strut is 5.75 ft long and is assumed to be pin-connected at both ends. Using a factor of safety n = 2.5 with respect to the critical load, determine the allowable force F in the cable.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
EVERYTHING on Axial Loading Normal Stress in 10 MINUTES - Mechanics of Materials; Author: Less Boring Lectures;https://www.youtube.com/watch?v=jQ-fNqZWrNg;License: Standard YouTube License, CC-BY