You can prepare effectively for Civil Engineering (CE) Engineering Mechanics with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Conditions For A Rigid-Body Equilibrium". These 30 questions have been designed by the experts with the latest curriculum of Civil Engineering (CE) 2026, to help you master the concept.
Test Highlights:
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The main condition for the rigid body is that the distance between various particles of the body does change.
Detailed Solution: Question 1
The shown here has a mass of 100kg. What is missing here in the diagram?
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What does the Newton’s third law states?
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Determine the horizontal components of the reaction on the beam caused by the pin at P. The force 60N is multiplied by 10 and then is applied.
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For equilibrium the net force acting on the body is zero.
Detailed Solution: Question 5
For equilibrium the net moment acting on the body by various forces is zero.
Detailed Solution: Question 6
Determine the vertical components of the reaction on the beam caused by the pin at Q. The force 60N is multiplied by 10 and then is applied.

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The net moment of the body is zero that means the distance between the force and the rotational axis is zero.
Detailed Solution: Question 8
Determine the horizontal components of the reaction on the beam caused by the roller at P.
Detailed Solution: Question 9
The net force of the body is zero that means the force are not being applied to the body at all and hence the body is in equilibrium.
Detailed Solution: Question 10
Detailed Solution: Question 11
Determine the vertical components of the reaction on the beam caused by the roller at P.
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For the conditions of the equilibrium of the body, i.e. the rigid body only the external forces defines the equilibrium. Because the internal forces cancels out so not to be considered.
Detailed Solution: Question 13
Which of the following needs to zero for the perfect equilibrium?
Detailed Solution: Question 14
Determine the vertical components of the reaction on the beam caused by the pin at P. The force 60N is multiplied by 10 and then is applied.
Detailed Solution: Question 15
Free body diagrams doesn’t play any role in making the calculations on the conditions of the equilibrium of the body.
Detailed Solution: Question 16
The net forces of acting on the body needs to be zero. This is also applicable for the simply supported beams. This means that the support reaction are also counted in making the net force zero.
Detailed Solution: Question 17
Determine the horizontal components of the reaction on the beam caused by the pin at Q.
Detailed Solution: Question 18
If the body is in equilibrium, but it having a rotational curled ray shown in the free body diagram then:
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If five forces of equal magnitude act concurrently on a particle and are equally spaced by 72° around a point, then:
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Detailed Solution: Question 21
What does the Newton’s second law states?
Detailed Solution: Question 22
Determine the vertical components of the reaction on the beam caused by the pin at Q.
Detailed Solution: Question 23
Detailed Solution: Question 24
Determine the vertical components of the reaction on the beam caused by the pin at Q. The force 60N is multiplied by 10 and then is applied.
Detailed Solution: Question 25
For the conditions of the equilibrium of the body, i.e. the rigid body only the external forces defines the equilibrium. And the support reactions only cancels out the rotation part of the body.
Detailed Solution: Question 26
Cantilever beams are always in equilibrium, whether you form the equilibrium equations or not.
Detailed Solution: Question 27
Determine the horizontal components of the reaction on the beam caused by the pin at Q.
Detailed Solution: Question 28
Determine the vertical components of the reaction on the beam caused by the pin at Q. The force 60N is multiplied by 10 and then is applied.
Detailed Solution: Question 29
For the conditions of the equilibrium of the body, i.e. the rigid body only the external forces defines the equilibrium. And the support reactions only adds the rotation part of the body.
Detailed Solution: Question 30
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