The parallelogram rule says that if we place two vectors so they have the same initial point, and then complete the vectors into a parallelogram, then the sum of the vectors is the directed diagonal that starts at the same point as the vectors.

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## What is parallelogram law of addition in physics?

The 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.

## What is law of vector addition in physics?

What is Triangle Law of Vector Addition? Triangle law of vector addition states that when two vectors are represented as two sides of the triangle with the order of magnitude and direction, then the third side of the triangle represents the magnitude and direction of the resultant vector.

## What is the parallelogram law of vector addition find the magnitude and direction of this law also calculate the special cases?

Statement of Parallelogram Law of Vector Addition: If two vectors can be represented by the two adjacent sides (both in magnitude and direction) of a parallelogram drawn from a point, then their resultant sum vector is represented completely by the diagonal of the parallelogram drawn from the same point.

## What is the formula for vector addition?

What is the Formula For the Addition of Vectors? This is the formula for the addition of vectors: Given two vectors a = (a1, a2) and b = (b1, b2), then the vector sum is, M = (a1 + b1, a2 + b2) = (Mx, My).

## How do you do the parallelogram law of vectors experiment?

Let P1 and P2 be the position of P, Q1 and Q2 be the position of Q and S1 and S2 be the position of S which are taken down with the help of the mirror. Remove the paper from the board. Using half-meter scale draw lines through P1 and P2, Q1 and Q2 and S1 and S2 represent P, Q, and S respectively.

## What is the meaning of parallelogram law of vector?

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.

## Who proved the parallelogram law for force addition?

Newton’s proof of the parallelogram of force Suppose two forces act on a particle at the origin (the “tails” of the vectors) of Figure 1.

## What’s the difference between Triangle law and parallelogram law?

Explanation: 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.

## What is vector law of addition 11?

Triangle law of vector addition class 11 The triangle law of vector addition states that if two vectors are represented by the sides of a triangle taken in order of magnitude and direction, then the resultant sum of the vectors is given by the triangle’s third side in reverse order of magnitude and direction.

## Does the vector addition obey the commutative law class 11?

We know that the vector addition is the sum of two or more vectors. Two important laws associated with vector addition are triangle law and parallelogram law. Similarly, the properties associated with vector addition are: Commutative Property.

## What is triangle law of vector addition formula?

Triangle law of vector addition states that when two vectors are represented by two sides of a triangle in magnitude, and direction taken in same order then third side of that triangle represents(in magnitude and direction) the resultant of the vectors. Thus, OR=p,RS=q,OS=r then OR+RS=OS i.e., p+q=r.

## What is parallelogram law of addition of two vectors derive an expression for its resultant and its direction?

Parallelogram law states that if two vectors are considered to be the adjacent sides of a Parallelogram, then the resultant of two vectors is given by the vector which is a diagonal passing through the point of contact of two vectors.

## What is the formula for vector in physics?

the formula to determine the magnitude of a vector (in two dimensional space) v = (x, y) is: |v| =√(x2 + y2). This formula is derived from the Pythagorean theorem. the formula to determine the magnitude of a vector (in three dimensional space) V = (x, y, z) is: |V| = √(x2 + y2 + z2)

## What is the Parallelogram law of vector subtraction?

The parallelogram law of subtraction says “if two vectors a and -b are starting from a point P and they are two adjacent sides of a parallelogram, then their sum which is a + (-b) (which can also be written as a – b) is the vector that represents the diagonal of a parallelogram that starts from P”.

## What is triangle law of vector addition explain with diagram?

Triangle law of vector addition helps us find the sum of two vectors. Suppose you have two vectors →u and →v. To find their sum, place the tail of →v at the head of →u as shown below: Now construct a vector −−→OP to complete the third side of the triangle OAP.

## Why does the thread junction in parallelogram law of vector addition does not come at rest at the same position?

Due to friction on the pulleys, the thread junction does not come at rest at same position always. The friction can be reduced by oiling the pulleys. Suspended weights are kept free to avoid changes in effective weight due to reaction of board or table. All of these.

## What are the main source of error in the experiment using Gravesand’s apparatus?

What are the main sources of error in the experiment using Gravesand’s apparatus ? Answer. Its sources of error are (1) Friction in the pulleys. (2) Weights in the threads.

## What is the verification of triangle law of forces?

To verify Triangle Law According to triangle law of forces, the resultant of P (= OA = BC) and Q (OB) is represented in magnitude and direction by OC which is taken in the reverse direction.

## What is position in physics class 11?

A position vector is defined as a vector that symbolises either the position or the location of any given point with respect to any arbitrary reference point like the origin. The direction of the position vector always points from the origin of that vector towards a given point.

## In which law of vector addition is the vectors to be added not taken in order?

1. The Commutative law states that the order of addition doesn’t matter, that is: A+B is equal to B+A. 2. The Associative law states that the sum of three vectors does not depend on which pair of vectors is added first, that is (A+B)+C=A+(B+C).

## What are the differences between polygon and parallelogram method?

1 Answer. Parallelogram method is a method for finding sum or resultant of two vectors. The polygon method is a method for finding sum or resultant of more than two vectors. (Can be used for two vectors also).

## What is difference between rectangle and parallelogram?

A parallelogram has opposite sides equal, while in a rectangle, the opposite sides are equal with all its adjacent sides being perpendicular to each other. The diagonals of a rectangle are equal whereas the diagonals of a parallelogram are not equal.

## What are the three laws of vector addition?

There are different laws of vector addition and they are: Triangle law of vector addition. Parallelogram law of vector addition.

## What are the two rules for adding vectors together?

To add or subtract two vectors, add or subtract the corresponding components. Let →u=⟨u1,u2⟩ and →v=⟨v1,v2⟩ be two vectors. The sum of two or more vectors is called the resultant. The resultant of two vectors can be found using either the parallelogram method or the triangle method .