Q2. A railway wagon of mass m tonnes and moving with a speed of v km per hour has to be stopped by three buffer springs in which the maximum compression allowed is ô mm. The mean diameter of the coil is five times the diameter of spring wire. Permissible shear stress for the material of the spring 610 MPa and its modulus of rigidity 80 kN/mm?. Find: 1.Maximum load on each spring, 2. Diameter of spring wire, 3. The mean diameter of the spring coil. 4. Number of turns of the spring, assuming the ends of the spring to be squared and ground, 5. Free length of the spring and 6. Pitch of the coil. V 21 6.84 216

Q2. A railway wagon of mass m tonnes and moving with a speed of v km per hour has to be stopped by three buffer springs in which the maximum compression allowed is ô mm. The mean diameter of the coil is five times the diameter of spring wire. Permissible shear stress for the material of the spring 610 MPa and its modulus of rigidity 80 kN/mm?. Find: 1.Maximum load on each spring, 2. Diameter of spring wire, 3. The mean diameter of the spring coil. 4. Number of turns of the spring, assuming the ends of the spring to be squared and ground, 5. Free length of the spring and 6. Pitch of the coil. V 21 6.84 216

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

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Introduction to Engineering Design Process

The engineering design process is a set of steps that engineers follow to come up with a solution to a particular problem. The solution to the problem involves the designing of a product that can accomplish a certain task and can qualify certain criteria. The process of designing is completely different from that of the scientific method, that you may be familiar with. If the project utilizes the observations, and the experiments then the engineering design process must be followed. The diagram shows the steps of the engineering design process, and the table below describes each step in more detail:

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Design of machine elements

solve according to Khurmi

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Q2. A railway wagon of mass m tonnes and moving with a speed of v
km per hour has to be stopped by three buffer springs in which the
maximum compression allowed is ò mm. The mean diameter of the
coil is five times the diameter of spring wire. Permissible shear stress
for the material of the spring 610 MPa and its modulus of rigidity 80
kN/mm?.
Find: 1.Maximum load on each spring, 2. Diameter of spring wire, 3.
The mean diameter of the spring coil. 4. Number of turns of the
spring, assuming the ends of the spring to be squared and ground, 5.
Free length of the spring and 6. Pitch of the coil.
m
V
21
6.84 216

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