Addition & Subtraction of Vectors (Triangular & Parallelogram Laws)

Addition & Subtraction of Vectors (Triangular & Parallelogram Laws) Video Lecture | Physics Class 11 - NEET

Physics Class 11

102 videos|411 docs|121 tests

FAQs on Addition & Subtraction of Vectors (Triangular & Parallelogram Laws) Video Lecture - Physics Class 11 - NEET

 1. What is the Triangular Law of Vector Addition?
Ans. The Triangular Law of Vector Addition states that when two vectors are added, the resultant vector can be represented by drawing the vectors head-to-tail. The sum is the vector drawn from the tail of the first vector to the head of the second vector.
 2. How does the Parallelogram Law of Vector Addition work?
Ans. The Parallelogram Law of Vector Addition states that when two vectors are added, the resultant vector can be represented by drawing a parallelogram with the vectors as adjacent sides. The sum is the vector drawn from the common point of the parallelogram to the opposite corner.
 3. Can vectors be subtracted using the same laws?
Ans. Yes, vectors can be subtracted using the same laws of vector addition. To subtract a vector, we can simply reverse its direction and add it to the other vector using the Triangular or Parallelogram Law.
 4. Why is vector addition commutative?
Ans. Vector addition is commutative because the order in which the vectors are added does not affect the result. This means that if we have vectors A and B, A + B will give the same result as B + A.
 5. How can we find the magnitude and direction of the resultant vector using the Triangular and Parallelogram Laws?
Ans. To find the magnitude of the resultant vector, we can use the Pythagorean theorem to calculate the length of the triangle or diagonal of the parallelogram formed. The direction of the resultant vector can be determined by measuring the angle it makes with a reference axis, usually the positive x-axis.

Physics Class 11

102 videos|411 docs|121 tests

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