𝐈𝐧𝐭𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧:
Physics is the foundation of understanding how the universe operates. One of the most fundamental concepts in this subject is Newton's Universal Law of Gravitation, which describes the gravitational force that governs the motion of planets, stars, and objects around us. In this article, we’ll break down the Universal Law of Gravitation, explore its derivation, and discuss its applications.
𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 𝐋𝐚𝐰 𝐨𝐟 𝐆𝐫𝐚𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧 - 𝐂𝐥𝐚𝐬𝐬 𝟏𝟏 𝐏𝐡𝐲𝐬𝐢𝐜𝐬 𝐍𝐨𝐭𝐞𝐬
A detailed explanation for Class 11 Physics students covering the key aspects of Newton's law of gravitation.
𝐖𝐡𝐚𝐭 𝐢𝐬 𝐭𝐡𝐞 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 𝐋𝐚𝐰 𝐨𝐟 𝐆𝐫𝐚𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧?
Newton's law of gravitation explains that every particle of matter attracts every other particle with a force.
𝐌𝐚𝐭𝐡𝐞𝐦𝐚𝐭𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐫𝐞𝐬𝐬𝐢𝐨𝐧 𝐨𝐟 𝐭𝐡𝐞 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 𝐋𝐚𝐰 𝐨𝐟 𝐆𝐫𝐚𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧:
F = G m1m2/r^2
F: Gravitational Force
G: Universal Gravitational Constant
m₁, m₂: Masses of two objects
r: Distance between their centers
𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐜𝐞 𝐨𝐟 𝐭𝐡𝐞 𝐆𝐫𝐚𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐂𝐨𝐧𝐬𝐭𝐚𝐧𝐭 (𝐆):
- Value of G
- Units of G
- Significance in calculating gravitational forces
Also Read: Instantaneous Velocity and Speed Class 11 Physics Notes
Applications of the Universal Law of Gravitation:
1. Explaining planetary motion
2. Tides caused by the moon and the sun
3. Motion of satellites
4. Understanding star systems
𝐃𝐞𝐫𝐢𝐯𝐚𝐭𝐢𝐨𝐧 𝐨𝐟 𝐭𝐡𝐞 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 𝐋𝐚𝐰 𝐨𝐟 𝐆𝐫𝐚𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧:
Step-by-step derivation with a simple explanation for Class 11 Physics students.
𝐋𝐢𝐦𝐢𝐭𝐚𝐭𝐢𝐨𝐧𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 𝐋𝐚𝐰 𝐨𝐟 𝐆𝐫𝐚𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧:
- Assumes point masses
- Ignores relativistic effects
- Does not explain the behavior of subatomic particles
𝐒𝐨𝐥𝐯𝐞𝐝 𝐄𝐱𝐚𝐦𝐩𝐥𝐞𝐬 𝐨𝐧 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 𝐋𝐚𝐰 𝐨𝐟 𝐆𝐫𝐚𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧:
1. Example: Calculate the force between Earth and a satellite.
2. Example: Gravitational force between two masses at a distance.
𝐂𝐨𝐧𝐜𝐥𝐮𝐬𝐢𝐨𝐧:
The Universal Law of Gravitation is a cornerstone of classical physics, explaining a wide range of natural phenomena, from planetary motion to everyday gravitational interactions. Understanding this law lays the groundwork for exploring more advanced concepts in physics.