Engineering Mechanics interview questions

1. A.when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
2. B.a dynamic problem is converted to an equivalent static one by adding an inertia force equal to mass times acceleration acting opposite to the acceleration
3. C.moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
4. D.ratio of limiting friction to normal reaction between two dry surfaces, independent of the apparent contact area

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1. A.Parallel axis theorem
2. B.Lami's theorem
3. C.Angle of repose
4. D.Radius of gyration

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1. A.Lami's theorem — steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction
2. B.Lami's theorem — moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
3. C.Lami's theorem — a dynamic problem is converted to an equivalent static one by adding an inertia force equal to mass times acceleration acting opposite to the acceleration
4. D.Lami's theorem — when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two

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1. A.a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations
2. B.steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction
3. C.moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
4. D.ratio of limiting friction to normal reaction between two dry surfaces, independent of the apparent contact area

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1. A.Varignon's theorem
2. B.Angle of repose
3. C.Lami's theorem
4. D.Parallel axis theorem

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1. A.Varignon's theorem — steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction
2. B.Varignon's theorem — ratio of limiting friction to normal reaction between two dry surfaces, independent of the apparent contact area
3. C.Varignon's theorem — moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
4. D.Varignon's theorem — moment of inertia about any axis equals that about the parallel centroidal axis plus area times the square of the distance between the axes

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1. A.when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
2. B.a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations
3. C.distance from an axis at which the whole area could be concentrated to give the same moment of inertia, equal to the square root of I over A
4. D.sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written

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1. A.Parallel axis theorem
2. B.Lami's theorem
3. C.Principle of virtual work
4. D.Free body diagram

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1. A.Free body diagram — a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations
2. B.Free body diagram — sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written
3. C.Free body diagram — moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
4. D.Free body diagram — when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two

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1. A.ratio of limiting friction to normal reaction between two dry surfaces, independent of the apparent contact area
2. B.when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
3. C.distance from an axis at which the whole area could be concentrated to give the same moment of inertia, equal to the square root of I over A
4. D.a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations

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1. A.Parallel axis theorem
2. B.Coefficient of friction
3. C.Varignon's theorem
4. D.Principle of virtual work

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1. A.Coefficient of friction — moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
2. B.Coefficient of friction — ratio of limiting friction to normal reaction between two dry surfaces, independent of the apparent contact area
3. C.Coefficient of friction — steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction
4. D.Coefficient of friction — sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written

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1. A.when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
2. B.sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written
3. C.a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations
4. D.steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction

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1. A.Radius of gyration
2. B.Angle of repose
3. C.Lami's theorem
4. D.Coefficient of friction

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1. A.Angle of repose — distance from an axis at which the whole area could be concentrated to give the same moment of inertia, equal to the square root of I over A
2. B.Angle of repose — a dynamic problem is converted to an equivalent static one by adding an inertia force equal to mass times acceleration acting opposite to the acceleration
3. C.Angle of repose — steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction
4. D.Angle of repose — a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations

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1. A.sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written
2. B.distance from an axis at which the whole area could be concentrated to give the same moment of inertia, equal to the square root of I over A
3. C.a dynamic problem is converted to an equivalent static one by adding an inertia force equal to mass times acceleration acting opposite to the acceleration
4. D.moment of inertia about any axis equals that about the parallel centroidal axis plus area times the square of the distance between the axes

Answer + AI explanation with Pro

1. A.Parallel axis theorem
2. B.Radius of gyration
3. C.Varignon's theorem
4. D.Coefficient of friction

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1. A.Parallel axis theorem — sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written
2. B.Parallel axis theorem — a dynamic problem is converted to an equivalent static one by adding an inertia force equal to mass times acceleration acting opposite to the acceleration
3. C.Parallel axis theorem — moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
4. D.Parallel axis theorem — moment of inertia about any axis equals that about the parallel centroidal axis plus area times the square of the distance between the axes

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1. A.steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction
2. B.when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
3. C.a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations
4. D.a dynamic problem is converted to an equivalent static one by adding an inertia force equal to mass times acceleration acting opposite to the acceleration

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1. A.Coefficient of friction
2. B.Free body diagram
3. C.D'Alembert's principle
4. D.Angle of repose

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1. A.D'Alembert's principle — a dynamic problem is converted to an equivalent static one by adding an inertia force equal to mass times acceleration acting opposite to the acceleration
2. B.D'Alembert's principle — sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written
3. C.D'Alembert's principle — distance from an axis at which the whole area could be concentrated to give the same moment of inertia, equal to the square root of I over A
4. D.D'Alembert's principle — when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two

Answer + AI explanation with Pro

1. A.ratio of limiting friction to normal reaction between two dry surfaces, independent of the apparent contact area
2. B.moment of a resultant about any point equals the algebraic sum of the moments of its component forces about that same point
3. C.when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
4. D.a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations

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1. A.Angle of repose
2. B.Principle of virtual work
3. C.Lami's theorem
4. D.Varignon's theorem

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1. A.Principle of virtual work — steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction
2. B.Principle of virtual work — when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
3. C.Principle of virtual work — a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations
4. D.Principle of virtual work — moment of inertia about any axis equals that about the parallel centroidal axis plus area times the square of the distance between the axes

Answer + AI explanation with Pro

1. A.sketch of a body isolated from its surroundings showing every external force, reaction and moment acting on it before equilibrium equations are written
2. B.when three concurrent coplanar forces keep a body in equilibrium, each force is proportional to the sine of the angle between the other two
3. C.distance from an axis at which the whole area could be concentrated to give the same moment of inertia, equal to the square root of I over A
4. D.moment of inertia about any axis equals that about the parallel centroidal axis plus area times the square of the distance between the axes

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1. A.Principle of virtual work
2. B.Lami's theorem
3. C.Radius of gyration
4. D.Varignon's theorem

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1. A.Radius of gyration — a system in equilibrium does zero net work under any small imaginary displacement compatible with its constraints, giving reactions and member forces without solving equilibrium equations
2. B.Radius of gyration — moment of inertia about any axis equals that about the parallel centroidal axis plus area times the square of the distance between the axes
3. C.Radius of gyration — distance from an axis at which the whole area could be concentrated to give the same moment of inertia, equal to the square root of I over A
4. D.Radius of gyration — steepest inclination of a plane on which a body stays at rest under gravity alone, numerically equal to the angle of friction

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