Physics Equations & Definitions

CIRCULAR MOTION

1. Angular displacement: The angle subtended at the centre of a curved path. Measured in radians.

2. Angular velocity: The rate of change of angular displacement. Measured in radians per second (rad/s).

Circular Motion Equation:

At the top of a circular loop,

SIMPLE HARMONIC MOTION

Simple Harmonic Motion: The motion of a particle about a fixed point such that its acceleration is proportional to its displacement from the fixed point and the acceleration is always directed towards this fixed point of frame of reference.
Resonance: The maximization of the amplitude of driven oscillations, when the driver frequency is equal to the natural frequency.
Natural Frequency: The innate frequency due to length, structure and bonding at atomic level.

SIMPLE HARMONIC MOTION EQUATION

GRAVITATION

1. Gravitational field: A space or a region where a mass experiences a force of attraction.

2. Gravitational field line: Shows the path taken by a mass when placed in a gravitational field.

3. Gravitational field strength/intensity (g): The force experienced per unit mass in a gravitational field.

4. Gravitational potential at a point: The work done in moving a unit mass from infinity to a point with the

gravitational field.

Gravitation Equation:

Kopler's Law and Escape velocity

ELECTRIC FIELDS

Electric field: A space or a region where a charge experiences a force.
Electric field line: Shows the path taken by a unit positive charge when placed in an electric field.
Electric field strength/intensity: The force experienced per unit charge in an electric field.

Electric Field Equation