PhysicsScalar QuantityNCTB পদার্থবিজ্ঞান অধ্যায় ৪ (কাজ, ক্ষমতা ও শক্তি)
Potential Energy
Bengali: বিভব শক্তি•Pronunciation: পটেনশিয়াল এনার্জি•Symbol: E_p \text{ বা } U
Standard Definition:
The stored energy of a body resulting from its relative position in a force field or its internal elastic deformation.
📐 Mathematical Equation, Units & Dimensions
Defining Mathematical Equation
Standard SI Unit
J (Joule)($J$ (জুল))
Dimensional Analysis
CGS Unit
erg
📖 Physical Concept & Comprehensive Explanation
Gravitational potential energy equals mgh when lifted through height h against gravity. Elastic potential energy stored in an ideal spring deformed by distance x equals 1/2*k*x^2. In isolated conservative systems, potential energy converts reversibly into kinetic energy.
🎯 High-Yield Revision Points
- ✓Gravitational potential energy is commonly referenced as zero at ground level.
- ✓Increases linearly with elevation (Ep = mgh).
- ✓Stored elastic spring energy is Ep = 1/2 * k * x^2.
Use Online Solver for Potential Energy
Compute step-by-step solutions, verify formulas, and plot interactive diagrams on biggan.me.
❓ Frequently Asked Exam Questions (FAQ)
Common questions in board and competitive entrance examinations
Q1: What is potential energy?
Potential energy is stored energy resulting from position in a force field or physical deformation.