Y.3. The force system shown consist of acounterclockwise couple of 720 N-m plus a 1200 Nforce through the origin O, directed down to the leftas speçified. Determine the (a) distance betweenthe forces and (b) intercepts of the single force atA(a,0) and B(0, b).1312F=1,200 NA(a,0) XC= 720 N-mA B(0,b)F=1,200 N200 N150 N20 cm4. Given 3 pulleys, the circular sections of which areconcentric, and acted upon by three couples as shown.300 N40 cm Determine its resultant moment,300 Ne 3150 NY200 N+30 cm100 N150 cm5. The force system on frame ABCDE is shownbelow. Replace the system by a force equal to theresultant of the three forces, acting vertically at B 1sd cmplus a couple acting horizontally at D and E.100 amD150 cm30 N

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3. The force system shown consist of a counterclockwise couple of 720 N-m plus a 1200 N force through the origin O, directed down to the left as speçified. Determine the (a) distance between the forces and (b) intercepts of the single force at A(a,0) and B(0, b).

3. The force system shown consist of a counterclockwise couple of 720 N-m plus a 1200 N force through the origin O, directed down to the left as speçified. Determine the (a) distance between the forces and (b) intercepts of the single force at A(a,0) and B(0, b).

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

Y.
3. The force system shown consist of a
counterclockwise couple of 720 N-m plus a 1200 N
force through the origin O, directed down to the left
as speçified. Determine the (a) distance between
the forces and (b) intercepts of the single force at
A(a,0) and B(0, b).
13
12
F=1,200 N
A(a,0) X
C= 720 N-m
A B(0,b)
F=1,200 N
200 N
150 N
20 cm
4. Given 3 pulleys, the circular sections of which are
concentric, and acted upon by three couples as shown.
300 N
40 cm Determine its resultant moment,
300 N
e 3
150 NY
200 N+
30 cm
100 N
150 cm
5. The force system on frame ABCDE is shown
below. Replace the system by a force equal to the
resultant of the three forces, acting vertically at B 1sd cm
plus a couple acting horizontally at D and E.
100 am
D
150 cm
30 N

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