## Chapter 02: Vectors and Equilibrium

Notes of Chapter 02: Vectors and Equilibrium of “Physics XI” for FSc Part 1 published by Punjab Textbook Board, Lahore. These notes are very helpful to prepare Physics paper of FSc Part 1 for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Punjab, Pakistan.

#### Summary & Contents:

The Quantity which can be measured is known as Physical Quantity or The property of matter which is related to its measurements is called Physical Quantity.There are two types of physical quantities.Scalar quantities and vector quantities.

- Basic Concept of vectors.
- Vectors.
- Rectangular Coordinate system.
- Addition of Vectors.
- Resultant Vectors.
- Vectors Subtraction.
- Multiplication of a Vector with a Scalar.
- Unit Vector.
- Null Vector.
- Equal Vectors.
- Rectangular Components of a Vector.
- Determination of a Vector from its Rectangular Components.
- Position Vector.
- Vector Addition by Rectangular Components.
- Product of two Vectors.
- Vector or Cross Product.
- Torque.
- Equilibrium of Forces.
- First Condition of Equilibrium.
- Second Condition of Equilibrium.

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