A horizontal bar supported by two suspended verti- cal wires 240 mm apart fixed to a rigid support. A load W is attached to the bar. The left-hand side wire is of copper with a diameter of 5 mm and the right-hand side wire is of steel of 3-mm diameter. The length of both the wires is 4 m initially. Find the position of the weight on the bar relative to the copper wire so that both the wires extend by the Example 1.21 4 m same amount. 240 mm Also, calculate the load, stresses and the elongation of each wire if W = I kN. Neglect the weight of the bar and take E, = 210 GPa and E, 120 GPa. %3D %3D Solution Given A horizontal bar system as shown in Fig. 1.35. Both wires extend by the same amount. COPPER STEEL

A horizontal bar supported by two suspended verti- cal wires 240 mm apart fixed to a rigid support. A load W is attached to the bar. The left-hand side wire is of copper with a diameter of 5 mm and the right-hand side wire is of steel of 3-mm diameter. The length of both the wires is 4 m initially. Find the position of the weight on the bar relative to the copper wire so that both the wires extend by the Example 1.21 4 m same amount. 240 mm Also, calculate the load, stresses and the elongation of each wire if W = I kN. Neglect the weight of the bar and take E, = 210 GPa and E, 120 GPa. %3D %3D Solution Given A horizontal bar system as shown in Fig. 1.35. Both wires extend by the same amount. COPPER STEEL

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.

Question

100%

A horizontal bar supported by two suspended verti-
cal wires 240 mm apart fixed to a rigid support. A
with
Example 1.21 ||
load W is attached to the bar. The left-hand side wire is of copper a
diameter of 5 mm and the right-hand side wire is of steel of 3-mm diameter.
The length of both the wires is 4 m initially. Find the position of the weight
on the bar relative to the copper wire so that both the wires extend by the
4 m
same amount.
240 mm
Also, calculate the load, stresses and the elongation of each wire if W = kN.
Neglect the weight of the bar and take E, = 210 GPa and E = 120 GPa.
%3D
Solution
Given A horizontal bar system as shown in Fig. 1.35. Both wires extend by A
the same amount.
W
COPPER
STEEL

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