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# What is the law of parallelogram in physics?

## What is the law of parallelogram in physics?

: a law in physics: the resultant of two vector quantities represented in magnitude, direction, and sense by two adjacent sides of a parallelogram both of which are directed toward or away from their point of intersection is the diagonal of the parallelogram through that point.

## What is the parallelogram law of vectors?

According to the parallelogram law of vector addition if two vectors act along two adjacent sides of a parallelogram(having magnitude equal to the length of the sides) both pointing away from the common vertex, then the resultant is represented by the diagonal of the parallelogram passing through the same common vertex …

What is the parallelogram law formula?

Parallelogram law states that the sum of the squares of the length of the four sides of a parallelogram is equal to the sum of the squares of the length of the two diagonals. In Euclidean geometry, it is necessary that the parallelogram should have equal opposite sides. 2(AB)2 + 2 (BC)2 = (AC)2 + (BD)2.

What is the use of parallelogram law of forces?

a rule for adding two vectors, as forces (parallelogram of forces ), by placing the point of application of one at the point of origin of the other and obtaining their sum by constructing the line connecting the two remaining end points, the sum being the diagonal of the parallelogram whose adjacent sides are the two …

### What is the difference between Triangle law and parallelogram law?

Triangle law is for two vectors when the second vector deviates from the direction of the first vector. Note here that second vector starts after the first vector. But in parallelogram law, the two vectors start from the same initial point in two different directions.

### Is a parallelogram?

A Parallelogram is a flat shape with opposite sides parallel and equal in length. Angles “a” and “b” add up to 180°, so they are supplementary angles. NOTE: Squares, Rectangles and Rhombuses are all Parallelograms!

What is Triangle law and parallelogram law?

If two forces acting at a point are represented in magnitude and direction by the two adjacent sides of a parallelogram, then their resultant isrepresented in magnitude and direction by the diagonal passing through the point.

Can a parallelogram be negative?

A parallelogram has vertices at the coordinates ? negative one, two; ? zero, four; ? three, one; and ? two, negative one.

#### Can parallelogram law be proved mathematically?

The Statement of Parallelogram law of vector addition is, If two vectors are considered to be the adjacent sides of a parallelogram, then the resultant of two vectors is given by the vector that is a diagonal passing through the point of contact of two vectors.

#### How do you prove a parallelogram is a law of forces?

The law of parallelogram of forces states that if two vectors acting on a particle at the same time be represented in magnitude and direction by the two adjacent sides of a parallelogram drawn from a point their resultant vector is represented in magnitude and direction by the diagonal of the parallelogram drawn from …

How is a force resolved?

In two dimensions, a force can be resolved into two mutually perpendicular components whose vector sum is equal to the given force. The components are often taken to be parallel to the x- and y-axes. Let F be a force, of magnitude F with components X and Y in the directions of the x- and y-axes, respectively.

What is the law of parallelogram in geometry?

The first is a theorem from Euclidean Geometry. It states that in a parallelogram, the sum of the squares of the side lengths is equal to the sum of the squares of the diagonals. More info here: The second is from vector geometry, and a visual demonstration of how to draw the sum of two vectors.

## What is the sum of the squares of a parallelogram?

In Mathematics, the parallelogram law belongs to elementary Geometry. This law is also known as parallelogram identity. It states that the sum of the squares of the lengths of the four sides of a parallelogram equals the sum of the squares of the lengths of the two diagonals.

## What is the law of the parallelogram ABCD?

If ABCD is a parallelogram, then AB = DC and AD = BC. Then according to the definition of the parallelogram law, it is stated as 2 (AB)2 + 2 (BC)2 = (AC)2 + (BD)2. In case the parallelogram is a rectangle, then the law is stated as:

What is the side OC of a parallelogram?

The vector P and vector Q represents the sides, OA and OB, respectively. According to the parallelogram law, the side OC of the parallelogram represents the resultant vector R. The steps for the parallelogram law of addition of vectors are:

What is a parallelogram rule?

parallelogram rule. n. 1. ( General Physics ) maths physics a rule for finding the resultant of two vectors by constructing a parallelogram with two adjacent sides representing the magnitudes and directions of the vectors, the diagonal through the point of intersection of the vectors representing their resultant.

### What is parallelogram law in physics?

Definition of parallelogram law. : a law in physics: the resultant of two vector quantities represented in magnitude, direction, and sense by two adjacent sides of a parallelogram both of which are directed toward or away from their point of intersection is the diagonal of the parallelogram through that point.

### What is the use of paralleiogram law?

Parallelogram of Forces is the famous theorem that can be used to determine the resultant of two forces acting at a point. This day come home the instrument I have so long longed for, the parallelogram.

What does parallelogram law of forces state?

Parallelogram law of forces. If two forces acting at a point are represented in magnitude and direction by the two adjacent sides of a parallelogram, then their resultant isrepresented in magnitude and direction by the diagonal passing through the point. Explanation