Angular Speed of Earth's rotation around its axis
Angular Speed of Earth's rotation
By: - Dr.A.S.Kalra Astrologer
Angular Speed of rotation of Earth: -
Earth rotates from West to East on its axis and it takes 24 hours in completing one rotation around its axis which means it rotates by 360° in this time interval of 24 hours.One rotation (360°) finishes in 24 hours or 24 × 60 minutes
360° = 24 × 60 minutes
1° = (24 × 60 minutes) / 360° = 4 minutes
This way Earth would take 4 minutes in rotating through 1° and which is its angular speed of rotation around its axis .
The angular speed of Earth's rotation around its axis is known as its rotational velocity. Earth completes one full rotation on its axis in approximately 24 hours, which corresponds to a day. The rotational velocity of Earth is approximately 360 degrees per 24 hours, or 15 degrees per hour.
To calculate the angular speed more precisely, we can use the formula:
Angular Speed = 2π / Time Period
Given that the time period for one full rotation of Earth is 24 hours, we can calculate the angular speed as follows:
Angular Speed = 2π / 24 hours = π / 12 hours
So, the angular speed of Earth's rotation around its axis is π / 12 radians per hour.