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The cables of a power line are copper-coated steel wire. The overall diameter of the wire is
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- A cylinder filled with oil is under pressure from a piston, as shown in the figure. The diameter d of the piston is 1,80 in. and the compressive force F is 3500 lb. The maximum allowable shear stress t^^, in the wall of the cylinder is 5500 psi. What is the minimum permissible thickness t„± of the cylinder wall? (Sec figurearrow_forwardA spherical balloon is filled with a gas. The outer diameter of the balloon is 20 in. and the thickness is 0,012 in. Calculate the maximum permissible pressure in the balloon if the allowable tensile stress and the allowable shear stress in the balloon are 1 ksi and 0.3 ksi, respectively.arrow_forward:Construct a Mohr circle using below information and label it appropriately. Using Mohr circle, find out maximum and minimum principal stresses and their orientation. Show them in a differential volume of element. 100 MPa 75 MPa 150 MPaarrow_forward
- 2. Two plates 16 mm thick are joined by a double riveted lap joint. The pitch of each row of rivets is 90 mm. The rivets are 25 mm in diameter. The permissible stresses are as follows: o 140 MPa ; t= 110 MPa and oe = 240 MPa Find the efficiency of the joint.arrow_forwardIn the figure below, a crane is supported by two cables of cross-sectional area equal to 3.04 cm2. Find the stress experienced by each cable. 2m 2 m TBQ 559 5m 5 m 5 m 3 m Crane boomarrow_forward1. Figure 3 depicts a bungee jumper coming to a stop at the bottom of the plunge before springing back up. A 570 N load is applied to a 90 m length bungee cord with a diameter of 4 mm and a Young's Modulus of 5.0 x 10⁹ Pa. i. ii. iii. 2. Is a bungee cord's Young's modulus less or larger than that of a regular rope? Calculate the bungee cord's stress Calculate the strain and extension of the bungee cord √000arrow_forward
- Q1/ (A) - The mechanism of femur bone is approximated as a circular tube (3 cm and 2 cm are the outer and inner diameter respectively) under loads as shown in figure Q1-A, determine the state of stresses at the points A and B. 40 cm 5 cm 380 N Figure Q1-A 300 Narrow_forwardA wire with a Young’s Modulus, E, of 8.5 x 106 N/m2 and an original length of 1.5 mis under tension. If the wire length extension is 2.5 mm, calculate the stress in thewire. Give your answer in N/m2to 2 decimal places.arrow_forwardA steel bolt of 6 mm in diameter has a tensile load of 40 kN. Find the average tensile stress at the section M and the screwed section N. where the diameter at the root of the thread is 4 mm as shown in Figure Q1.2. M -40KN 40KN4- 4 mm diameter 6 mm diameterarrow_forward
- 100 kN A bracket in the form of a plate is fitted to a column by means of four rivets of the same size, as shown in Fig. A load of 100 kN is applied to the bracket at an angle of 60° to the horizontal and the line of action of the load passes through the centre of the bot- tom rivet. If the maximum shear stress for the material of the rivet is 70 MPa, find the diameter of rivets. What will be the thickness of the plate if the crushing stress is 100 MPa? 80 80 80 60° All dimensions in mm.arrow_forward3. The rail roads are usually made of steel material segments with a 10 m long. Between each segments there are some spacing for the contraction and expansion because of temperature differences. a. When the temperature of certain region is changes between -20.0 °C and 30 °C how much space they should put between each segment? b. If the segments are originally in contact, what is the stress in them at 30 °C?arrow_forwardFind the stresses in cables a and b.arrow_forward
- Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning