Physics Teacher

   3. THE LAW OF INERTIA (NEET Notes – Easy Line-by-Line Explanation) 1. Galileo's Study of Motion on an Inclined Plane Original: Galileo studied motion of objects on an inclined plane. Easy Note: Galileo performed experiments using sloping surfaces (inclined planes) to understand how objects move. Original: Objects moving down an inclined plane accelerate. Easy Note: When an object rolls down a slope, its speed increases continuously. This increase in speed is called acceleration . Original: Objects moving up retard. Easy Note: When an object moves upward on a slope, its speed decreases gradually. This decrease in speed is called retardation (deceleration) . Original: Motion on a horizontal plane is an intermediate situation. Easy Note: A flat (horizontal) surface is between the above two situations because the object neither gains nor loses speed due to the slope. Original: An object moving on a frictionless horizontal plane should move with constant v...

  Learn Physics Constants Fast with Mnemonics and Visual Memory Techniques - Dr.Sanjaykumar Pawar  🚀 Ultra-Memory Guide for Physics Constants Instead of memorizing 20+ random numbers, group them into families , patterns, stories, and visual maps. 1. MASTER MEMORY TABLE Constant Value Memory Trick Electron Mass 9.11 × 10⁻³¹ kg Electron = smallest → 9-11 emergency tiny particle Proton Mass 1.67 × 10⁻²⁷ kg Proton ≈ 1836 times heavier than electron Neutron Mass 1.675 × 10⁻²⁷ kg Neutron ≈ Proton Electron Charge 1.6 × 10⁻¹⁹ C Most important physics number Speed of Light 3 × 10⁸ m/s "3 followed by 8 zeros" Planck Constant 6.626 × 10⁻³⁴ Triple 6 pattern Gravitation Constant G 6.67 × 10⁻¹¹ G = 667 Avogadro Number 6.022 × 10²³ Mole's phone number Boltzmann Constant 1.38 × 10⁻²³ Remember 138 Stefan Constant 5.67 × 10⁻⁸ Similar to Wien family Wien Constant 2.898 × 10⁻³ Near 2.9 Solar Constant 1.366 × 10³ Sun sends 13...

  Aristotle's Fallacy Class 11 Physics Notes, MCQs & Questions Answers - Dr.Sanjaykumar Pawar  4.2 ARISTOTLE'S FALLACY – Easy Line-by-Line Notes (NEET Level) Introduction One important question in physics is: "Is a force required to keep a body moving?" Today the answer seems simple. But scientists took many centuries to find the correct answer. The correct explanation was given by in the 17th century. Galileo's ideas became the foundation of Newtonian Mechanics . These ideas marked the beginning of modern science. Aristotle's View About Motion was a Greek philosopher who lived from 384 BC to 322 BC. Aristotle believed that: "A moving object needs a continuous external force to keep moving." According to him, if the force is removed, the object should stop moving. Example Given by Aristotle Consider an arrow shot from a bow. Aristotle thought the arrow continues moving because: Air behind the arrow keeps pushing it f...

  Chapter 4: Laws of Motion – Introduction (NEET Level Easy Notes)  - Dr.Sanjaykumar pawar 1. What was studied in the previous chapter? In the previous chapter, we studied motion of particles . We learned how to describe motion using: Velocity → tells how fast and in which direction an object moves. Acceleration → tells how velocity changes with time. We could describe motion mathematically. But one important question remained: Question: What causes a body to move or change its motion? This question is answered in the chapter Laws of Motion . 2. Need for Force in Daily Life From our everyday experience, we observe that an object at rest does not start moving on its own. Some external action is needed. Examples: A football starts moving only when someone kicks it. A stone moves upward only when someone throws it. Tree branches swing because of wind . A boat moves because of the flowing river . Conclusion: ➡️ To move an object from rest, an exter...

   Angular Speed and Linear Speed Numerical with Solution Dr.Sanjaykumar pawar Uniform circular motion showing angular speed, linear speed and centripetal acceleration for an insect moving in a circular path. Internal Links Introduction to Uniform Circular Motion Angular Velocity Formula and Numerical Problems Linear Velocity in Circular Motion Explained Centripetal Force and Centripetal Acceleration Motion in a Plane Class 11 Notes NCERT Physics Class 11 Solved Examples Circular Motion Important Formulas PDF Difference Between Speed and Velocity Uniform vs Non-Uniform Circular Motion Class 11 Physics Chapter-Wise Numerical Solutions Example 3.9 - Uniform Circular Motion Example 3.9 – Uniform Circular Motion Example 3.9 An insect trapped in a circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100 s. (a) What is the angular speed, and the linear speed of the motion? (b) Is the acceleration vector a constant vector ?...