IIT JAM 2025: Equation of SHM, Velocity & Displacement of SHM for IIT JAM | IIT JAM Physics 2025

Updated: November 15, 2024

PW IIT JAM & CSIR NET


Summary

This video introduces the basics of physical science, focusing on different types of motions such as periodic motion and simple harmonic motion. It covers the equations of motion, initial phases, and the behavior of objects in systems like spring mass systems. The video provides detailed explanations on concepts like restoring force, equilibrium positions, extreme positions, and the relationship between displacement, velocity, and acceleration in various types of motion. It also delves into solving equations related to velocity and displacement, emphasizing the importance of precision in mathematical operations for accurate results.


Introduction to Basics of Physical Science

Introduction to the basics of physical science, covering topics related to different types of motions like periodic motion, simple harmonic motion, and equations of motion.

Periodic Motion and Equations of Motion

Explaining periodic motion, simple harmonic motion, equations of motion, initial phase, different types of motions, and the importance of understanding the basics clearly.

Periodic Motion Types

Discussing periodic motion, its repetition after fixed intervals, examples such as rotation about an axis, and complete rotation within a time period.

Uniform Circular Motion

Exploring uniform circular motion, its fixed time period, repetition, and its significance in physics, using examples and explaining its key concepts.

Spring Mass System

Introducing the spring mass system, understanding motion of objects connected to springs, explanation of spring constant and mass, and discussing the behavior of the system.

Understanding Position and Motion

Explaining osillation motion, understanding position, called oscillation motion, and its significance in physics with examples like spring mass systems.

Two-End-Fro Motion

Defining two-end-fro motion, discussing its behavior where an object moves back and forth between two positions, and linking it to oscillation motion.

About Oscillatory Motion

Explaining oscillatory motion focusing on its relationship with position, while discussing the implications and details of simple pendulum motion.

Understanding Examples of Up and Down Motion

Discussion about motion examples like up and down motion in spring mass systems to understand maximum position, velocity, and acceleration.

Exploring Restoring Force Impact on Motion

Explains the impact of restoring force on an object's motion, discussing its effect on acceleration, velocity, and extreme positions.

Equilibrium Position and Force Analysis

Discussion on equilibrium position, restoring force, and their impact on an object's motion in various directions.

Force Analysis in Relation to Acceleration

Analyzing force effects on acceleration and motion in opposite directions, affecting velocity and extreme positions.

Understanding Extreme Positions and Velocity

Details on extreme positions, force, and velocity changes in the context of force impact and varying motion directions.

Exploration of Motion and Restoring Force

Detailed explanation of how restoring force impacts an object's motion, leading to continual back-and-forth motion.

Identification of Equilibrium Position

Discussion on equilibrium position, extreme position, velocity, and force analysis in the context of motion mechanics.

Examining Restoring Force Influence

Exploration of how restoring force affects an object's equilibrium position and its motion in different directions.

Understanding Main Position and Force Factors

Discussion on main positions, extreme positions, velocity, and force factors impacting object motion and equilibrium.

Finalizing Complete Motion Understanding

Summary and clarification on velocity, force, extreme positions, and complete understanding of motion dynamics.

Discussion on Direct Statements based questions

Explanation of direct statement based questions related to periodic motion and types of motion including periodic, oscillatory, and reverse. Clarification on the concept of periodic motion and its characteristics.

Understanding Periodic Motion

Detailed explanation of periodic motion, its characteristics, and the concept of restoring force. Discussion on the fixed time period and friction's effect on the period of motion. Differentiation between periodic and oscillatory motion.

Restoring Force Concept

Explaining the restoring force in displacement, opposite direction force, and stability of objects. Discussing the displacement of an object from its mean position and the role of restoring force in opposite directions.

Equation of Simple Harmonic Motion

Explanation of the equation of simple harmonic motion, its characteristics, and comparison with basic motion cases such as circular and simple harmonic motion. Understanding the concept of displacement in simple harmonic motion.

Simplest Case of Simple Harmonic Motion

Description of the simplest case of simple harmonic motion involving the smallest amplitude and displacement. Comparison between displacement in simple harmonic motion and oscillatory motion.

Clearing Confusions on Different Types of Motion

Clarification on all types of motion including periodic, oscillatory, and others. Differentiating between simple harmonic motion and other motion types. Explaining displacement in various motion scenarios.

Equation of Motion

Explaining the equation of motion in terms of force, displacement, and acceleration.

Acceleration Calculation

Deriving the equation for acceleration using force and mass components.

Differential Equations

Discussing differential equations related to force, acceleration, and displacement.

Extreme Position and Time Period

Defining extreme position, time period, and analyzing the relationship between them.

Amplitude and Displacement

Understanding amplitude, displacement, and their relation to maximum displacement.

Motion Analysis

Analyzing motion from mean to extreme positions and understanding time periods.

Position Analysis

Analyzing positions and understanding time periods from mean to extreme positions.

Crossing Extreme Positions

Understanding the concept of crossing extreme positions during motion analysis.

Time Period Calculation

Explaining the time period in motion analysis and its calculation.

Analyzing Total Time

Understanding and calculating the total time taken for complete motion analysis.

Extreme Positions and Time

Relating extreme positions to time and analyzing the symmetry in motion analysis.

Periodic Motion

Explaining periodic motion and its characteristics in different systems.

Time Period Coding

Discussing coding techniques for time periods in motion analysis.

Starting Positions

Analyzing the starting positions and their impact on the time period in motion analysis.

Return Analysis

Understanding the return analysis from extreme positions and its relation to the time period.

Displacement Index Meaning

Explanation of displacement index in relation to velocity and displacement. Understanding the object with mass 'm' and its position. Discussing extreme position and arbitrary position.

Equation Clarification

Explanation of the equation a = -ω^2x. Clarifying the terms and simplifying the equation for better understanding.

Velocity and Displacement Relationship

Discussion on velocity at different positions, including extreme and arbitrary points. Explaining the relation between velocity, amplitude, and displacement.

Integration and Relationship

Integration implications on velocity and displacement. Understanding the relationship between velocity amplitude and displacement.

Relationship Type Identification

Identifying the type of relationship between velocity and displacement (elliptical, circular, straight line). Simplifying the equation for clearer understanding.

Time-dependent Equation

Explaining the time-dependent equation in terms of velocity and displacement. Integration considerations with time.

Initial Position Calculation

Determining the initial position of a particle at different time points. Simplifying equations for better visualization.

Understanding Phase and Equations

Explaining the initial phase and its significance in equations. Representation of position based on initial conditions.

Integration and Representation

Integration insights and representation of time-dependent equations. Calculation of values based on initial conditions and equations.

Time Period Calculation

Calculation of time period based on equations and understanding extreme positions. Derivation of time values for better comprehension.

Particle Position and Time Calculation

Discussion on calculating the position of a particle at different times and determining the time taken to reach extreme positions.

Value Calculation Using Two Pieces of Information

Utilizing the values of x and omega to calculate the value of 'f' at different instances.

Deciding the Particle Value

Exploring the options for selecting the value of 'f' based on the particle's displacement and velocity direction.

Analysis of Displacement and Velocity

Understanding the relationship between displacement, velocity, and direction of motion of a particle.

Determining Value Positivity

Discussion on determining when the value of 'f' can be positive and selecting the appropriate value based on calculations.

Calculating Extreme Positions

Analysis of extreme positions and determining the particle's location based on the given equations.

Analysis of Particle Behavior

Examining the behavior of a particle in terms of acceleration and time calculations.

Phase Diagram Analysis

Discussion on using phase diagrams to analyze values and determine the positions of particles.

Coordinate Calculations

Calculation of coordinates and values based on given equations and information provided.

Acceleration Calculation

Determining acceleration values and discussing the maximum acceleration experienced by a particle.

Solving Equations with Omega and a

Demonstration of solving equations involving the values of Omega and a using the V and X values given in the equation.

Understanding Basic Concepts

Importance of trying to solve equations independently before referring to solutions, along with the significance of fixing errors in calculations to obtain correct answers.

Calculation of Values

Calculation process for determining the values of variables V1, V2, and a in the equations provided, showcasing step-by-step division and squaring methods.

Further Equation Solving

Detailed steps of solving equations by squaring, canceling out terms, and simplification to find the value of variable a.

Final Value Calculation

Calculations for determining the final value of variable a after multiple mathematical operations, ensuring accuracy in the solution process.

Correcting Calculation Errors

Identifying and rectifying calculation errors while solving equations, showcasing the importance of precision in mathematical operations.

Solving for Variable X

Step-by-step process for solving equations to determine the value of variable X, demonstrating the application of mathematical operations in finding the correct solution.

Determining Value for Variable A

Calculation method for finding the value of variable A through division and simplification of terms, ensuring accuracy in the final result.

Final Calculation Steps

Final steps of calculation involving square roots and division to determine the values of variables in the given equations, ensuring correctness in the mathematical process.

Learning Concepts in the Class

Overview of the concepts learned in the class session, including equations of SHM, time-dependent equations, velocity, and displacement relationships, setting the foundation for future topics in energy and different graphs in SHM.


FAQ

Q: What is periodic motion?

A: Periodic motion is motion that repeats after fixed intervals of time.

Q: Can you explain simple harmonic motion?

A: Simple harmonic motion is a type of periodic motion where the restoring force is directly proportional to the displacement from equilibrium, resulting in a sinusoidal motion.

Q: What is the equation of motion and how is it derived?

A: The equation of motion relates force, displacement, and acceleration. It is derived by using the principles of Newton's second law of motion.

Q: What is the significance of the initial phase in equations of motion?

A: The initial phase represents the starting position of a particle at a specific time point, influencing the entire motion analysis.

Q: How is time period calculated in motion analysis?

A: The time period is calculated by determining the time taken for the motion to complete one full cycle, usually from an extreme position back to the same extreme position.

Q: What is the relationship between velocity and displacement in motion analysis?

A: Velocity and displacement are related in a way that the velocity of an object varies depending on its position, amplitude, and direction of motion.

Q: Explain the concept of restoring force in the context of motion.

A: Restoring force is the force that acts in the opposite direction of the displacement from equilibrium, bringing the object back towards its mean position.

Q: How do differential equations play a role in motion dynamics?

A: Differential equations help in describing the relationship between force, acceleration, and displacement in motion scenarios.

Q: What is the significance of extreme positions in motion analysis?

A: Extreme positions represent the maximum displacement points reached by an object during its motion, aiding in understanding the overall motion dynamics.

Q: How can coding techniques be utilized for time periods in motion analysis?

A: Coding techniques can be used to simulate and analyze different motion scenarios, facilitating a deeper understanding of time periods and motion characteristics.

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