Question

In this module, you will look for an article or news story/video that relates to one or more of the following topics:

Conservative versus non-conservative forces

Potential Energy

Conservation of energy (as it relates to physics, not environmental friendliness)

These are pretty broad topics, but a few ideas should spring readily to mind.

By the end of the third day of the module, create a thread with a 250-word post including one or more of the topics listed above, an active hyperlink to your resource, a summary of the resource itself, a summary of the material you are learning in this module as it relates to your resource, and an explanation of how the topic or resource ties to your everyday life.

Question is not related to a lecture. Just requires an article, explanation of the article, and how Conservative versus non-conservative forces, Potential Energy, or Conservation of energy (as it relates to physics, not environmental friendliness) apply to that article.

Answer 1

conservative forces and non conservating forces can defined in terms of work done by them.

Conservative force: If the work done by a force in moving a particle from one position to another position does not depend the path of along the force applied such a force is called conservative force . eg: force of gravity , spring force , thermal forces

Non Conservative force : If the work done by that force depends on the path then such a force is called non conservative force. Frictional force , air resistance

Potential energy    : The energy possessed by a body due to the virtue of its position is called

potential energy

Conservation of energy : It states that Total energy of systen is always constant.It will change one form    to another form

A rollor ball of mass m is at a height H from the ground and is at rest . If the roller is pushed down an incline plane to the ground . the roller reaches the ground with a velocity V . In this case there is conservation of energy as Total energy at top of slope is equal to the total energy at ground.

   PE1 +KE1=PE2+K2 = MgH =1/2mV^2