HOOKE'S LAW Introduction In physics, Hooke's Law is one of the fundamental principles governing how objects deform under external forces . Named after the 17th-century British physicist Robert Hooke, this law provides a crucial understanding of the behavior of elastic materials, such as springs and rubber bands. Whether stretching a rubber band or compressing a spring, Hooke's Law helps explain what happens when forces act on these materials. What is Hooke's Law: Hooke's Law states that the force F needed to extend or compress a spring by some distance x is proportional to that distance. Mathematically, it is expressed as: F= -kx Here k represents the spring constant, which is the measure of the stiffness of the spring, and x is the displacement from the displacement position. The negative sign indicates that the force exerted by the spring is in the opposite direction of the displacement. Understanding the Spring Constant: The spring constant k is a critical co...
SCALAR AND VECTOR QUANTITIES
Table of Contents:
- What are Physical Quantities
- What are Scalar Quantities
- What are Vector Quantities
- PHYSICAL QUANTITIES:
- Those quantities which can be measured and have a unit are called Physical Quantities.
- They are divided into two types of quantities
- Scalar Quantities
- Vector Quantities
- Scalar Quantities:
- Those quantities which are specified by their Magnitude and unit only are termed as Scalar Quantities.
- Magnitude is nothing but it is a number for instance, 5 kg of sugar. Here 5 is Magnitude and kg is the unit.
- For Example:
- Speed
- Distance
- Energy
- Workdone
- Power
- Vector Quantities
- Those quantities which are specified by their magnitude + unit and direction, are called Vector Quantities.
- For Example:
- Velocity
- Acceleration
- Force
- Tension
- Graphical Representation of Vectors:
- Vector quantities are represented by an Arrow. Shown in fig(01).
Figure 01: Graphical Representation of Vectors
The length of the arrows shows the magnitude, and the arrow head shows the direction.
- Scalar Quantities
- Vector Quantities
- Speed
- Distance
- Energy
- Workdone
- Power
- Those quantities which are specified by their magnitude + unit and direction, are called Vector Quantities.
- For Example:
- Velocity
- Acceleration
- Force
- Tension
- Vector quantities are represented by an Arrow. Shown in fig(01).
|
| Figure 01: Graphical Representation of Vectors |
The length of the arrows shows the magnitude, and the arrow head shows the direction.
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