Georgia State University
Georgia State University: Hyper Physics: Conservation of Energy
This site is from the Physics Department at Georgia State University. The conservation of energy as a fundamental conservation law is presented and compared to other conservation laws (momentum and angular momentum). Links to further...
Sophia Learning
Sophia: Improperly Defining a System
This presentation explains why a poorly defined system can lead to incorrect answers in physics problems.
![San Jose State University: Buildings in Earthquakes [Ppt] PPT](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "San Jose State University: Buildings in Earthquakes [Ppt] PPT")
San Jose State University
San Jose State University: Buildings in Earthquakes [Ppt]
Explains the physics of building movement during an earthquake through a discussion of force, mass, acceleration, frequency, and period. Then looks at the factors that affect a building's resilience versus the damage it could sustain.
Sophia Learning
Sophia: Forces in a Rope & Pulley System: Lesson 2
This lesson explains what forces are acting on objects which are at rest or moving in a rope and pulley system. It is 2 of 2 in the series titled "Forces in a Rope & Pulley System."
Sophia Learning
Sophia: Free Body Diagram: Lesson 2
This lesson introduces the concept of the free-body diagram. It is 2 of 2 in the series titled "Free-Body Diagram."