University:
Arizona State University
Course:
PHYS 102 | Introductory Physics I
Academic year:

2024
Views:

101

Pages:

2
Author:

Mohammed N.

Work, Energy, and Power Work, energy, and power are fundamental concepts in physics that describe how forces interact with objects and cause changes in motion. 1. Work Work is done when a force is applied to an object and the object moves in the direction of the force. Mathematically, W=Fdcosθ where: ● W = Work done (Joules, J) ● F= Force applied (Newtons, N) ● d = Displacement of the object (meters, m) ● θ = Angle between the force and displacement 2. Energy Energy is the capacity to do work. The two main types of mechanical energy are: ● Kinetic Energy: Energy of motion. ● Potential Energy: Stored energy due to position. Kinetic Energy KE=1/2mv^2 where: ● KE= Kinetic energy (Joules, J) ● m= Mass of the object (kg) ● v= Velocity of the object (m/s) Potential Energy PE=mgh where: ● PE= Potential energy (Joules, J) ● m= Mass of the object (kg) ● g = Acceleration due to gravity (9.8 m/s²) ● h = Height above the reference point (m) 3. Power Power is the rate at which work is done or energy is transferred. P=Wt where: ● P = Power (Watts, W) ● W= Work done (Joules, J) ● t= Time taken (seconds, s) Conclusion Work, energy, and power are closely related concepts in physics. Understanding these principles helps in analyzing various mechanical and physical systems in daily life and engineering applications.