Q1: Circle the correct answer. 1. How many unknown support reactions are there in this problem? 40 hft A) Two forces and two couple moments B) One force and two couple moments C) Three forces D) Three forces and one couple moment 30 2. A general system of forces and couple moments acting on a rigid body can be reduced to a A) single force B) single moment C) single force and two moments D) single force and a single moment 3. The three scalar equations, E Fx EFy E Mo 0, are equations of equilibrium in two dimensions. A) Incorrect B) The only correct C) The most used D) Not sufficient 4. The forces on the pole can be reduced to a single force and a single moment at point A) P B) Q C)R D) S E) Any of these points. y 5. If a support prevents translation of a body, then the support exerts a on the body. A) Couple moment B) Force C) Both A and B. D) None of the above

Q1: Circle the correct answer. 1. How many unknown support reactions are there in this problem? 40 hft A) Two forces and two couple moments B) One force and two couple moments C) Three forces D) Three forces and one couple moment 30 2. A general system of forces and couple moments acting on a rigid body can be reduced to a A) single force B) single moment C) single force and two moments D) single force and a single moment 3. The three scalar equations, E Fx EFy E Mo 0, are equations of equilibrium in two dimensions. A) Incorrect B) The only correct C) The most used D) Not sufficient 4. The forces on the pole can be reduced to a single force and a single moment at point A) P B) Q C)R D) S E) Any of these points. y 5. If a support prevents translation of a body, then the support exerts a on the body. A) Couple moment B) Force C) Both A and B. D) None of the above

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

Q1: Circle the correct answer.
1. How many unknown support reactions are there in this
problem?
40 ht
A) Two forces and two couple moments
B) One force and two couple moments
C) Three forces
D) Three forces and one couple moment
30
2. A general system of forces and couple moments acting on a rigid body can be reduced to a
A) single force
B) single moment
C) single force and two moments
D) single force and a single moment
3. The three scalar equations, E Fx = EFy E Mo 0, are
equations of equilibrium in two dimensions.
A) Incorrect
B) The only correct
C) The most used
D) Not sufficient
4. The forces on the pole can be reduced to a single force and a
single moment at point
A) P
B) Q
C) R
D) S
E) Any of these points.
y
5. If a support prevents translation of a body, then the support exerts a
on the body.
A) Couple moment
B) Force
C) Both A and B.
D) None of the above

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