Engineering Mechanics Prelim Exam Complete Questions And Answers Guaranteed Pass.

Isaac Newton - correct answer In the latter part of the seventeenth century, Sir _________ stated the fundamental principles of mechanics, which are the foundation of much of today's engineering. First Law of Motion - correct answer An object at rest remains at rest, except acted upon by an external force. Second Law of Motion - correct answer The rate of change of momentum of a body is directly proportional to the external force applied to the body. Third Law of Motion - correct answer For every action, there's an equal and opposite reaction. Mechanics - correct answer can be defined as that science which describes and predicts the conditions of rest or motion of bodies under the action of forces. 1. Mechanics of Rigid Bodies 2. Mechanics of Deformable Bodies 3. Mechanics of Fluids - correct answer Mechanics is divided into three parts: Mechanics - correct answer it is a physical science, since it deals with the study of physical phenomena. Statics and dynamics - correct answer the mechanics of rigid bodies is subdivided into? Rigid Body - correct answer is defined as a definite amount of matter the part of which are fixed in position relative to each other. Solid bodies - correct answer are never rigid; they deform under the action of applied forces. Mechanics - correct answer is the physical science concerned with the behavior of bodies that are acted upon by forces. Statics - correct answer is the study which deals with the condition of bodies in equilibrium subjected to external forces. Dynamics - correct answer is also a branch of mechanics in which the forces and their effects on the bodies in motion are studied. System of measurement - correct answer refers to the process of associating numbers with physical quantities and phenomena. - it is more like a collection of units of measurement and rules relating them to each other. Force - correct answer is a 'push or pull' upon an object resulting from the object's interaction with another object. Resultant - correct answer when two or more forces or moments are combined, the combination is called? Coplanar Force System - correct answer it refers to the number of force which remain in same plane. = it also stated as the number of force system which remains in single plane. = this force system can be concurrent, parallel, non-concurrent and non-parallel. Concurrent Coplanar Force System - correct answer refers to the number of forces which interest at a common point with their lines of action. - it is the simplest coplanar force system to resolve to determine the resultant force. = it is not recommended that all the separate vectors are to meet at the common point. Parallel Coplanar Force System - correct answer refers to the number of forces which are parallel to each other with their lines of action. - is mostly used in the analysis of simple beams with number of point loads. Non-concurrent Non-Parallel Force System - correct answer refer to the number of forces which are not parallel and do not lie at the common point with their lines of action. - it is not the simplest coplanar force system to resolve to determine the resultant force when compared to concurrent and parallel coplanar systems. Non-coplanar Force System - correct answer refers to the number of forces which do not remain in same plane. - it also stated as the number of forces in a system which remains in dissimilar planes. Contact Forces - correct answer these are forces that act between two objects that are physically touching each other. 1. Reaction force 2. Tension 3. Friction - correct answer examples of contact forces include: Non-Contact Forces - correct answer are forces that act between two object that are not physically touching each other. 1. Magnetic force 2. Electrostatic force 3. Gravitational force - correct answer examples of non-contact forces include: Scalar quantity - correct answer the physical quantities which are specified with the magnitude or size alone are referred to as _____? Scalar quantity - correct answer it is one-dimensional measurement of quantity like mass or temperature. = a physical quantity which has force but no direction.