Which is the correct statement about law of polygon of forces?

A If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium
B If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
C If a polygon representing forces acting at a point is closed then forces are in equilibrium
D If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

Correct Answer: If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

Bissoy MCQ
#Civil Engineering #Strength of Materials

Related Questions

The interior angles of a polygon are in AP. The smallest angle is 120° and the common differences is 5". Find the number of sides of the polygon.
A 7
B +8
C 9
D 10
If the sum of the interior angles of a regular polygon measures 1444°, how many sides does the polygon have?
A 10 sides
B 8 sides
C 12 sides
D 9 sides
The Law of Polygon of Forces states that
A If a polygon representing the forces acting at point in a body is closed, the forces are in equilibrium
B If forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by t
C If forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side
D If forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
A 30°
B 60°
C 90°
D 120°
If a set of given forces are such that their free vectors build a closed polygon, then
A The resultant force and resultant couple are always zero
B The resultant force is zero but resultant couple is not zero
C The resultant force is zero but resultant couple may not be zero
D The resultant force and resultant couple both may not be zero
The force polygon representing a set of forces in equilibrium is a
A Triangle
B Open polygon
C Closed polygon
D Parallelogram
Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by
A Its longer side
B Its shorter side
C The diagonal of the parallelogram which does not pass through the point of intersection of the forces
D The diagonal of the parallelogram which passes through the point of intersection of the forces
Non-coplanar concurrent forces are those forces which
A Meet at one point, but their lines of action do not lie on the same plane
B Do not meet at one point and their lines of action do not lie on the same plane
C Meet at one point and their lines of action also lie on the same plane
D Do not meet at one point, but their lines of action lie on the same plane
Coplanar concurrent forces are those forces which
A Meet at one point, but their lines of action do not lie on the same plane
B Do not meet at one point and their lines of action do not lie on the same plane
C Meet at one point and their lines of action also lie on the same plane
D Do not meet at one point, but their lines of action lie on the same plane
Non-coplanar non-concurrent forces are those forces which
A Meet at one point, but their lines of action do not lie on the same plane
B Do not meet at one point and their lines of action do not lie on the same plane
C Do not meet at one point but their lines of action lie on the same plane
D None of the above

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