Work, Energy,& Power #3: Conservation of Energy
Define: Mechanical energy

 

State the Law of Conservation of Mechanical Energy mathematically.
 
 

State the Law of Conservation of Mechanical Energy in your own words.
 
 

Why is it necessary to ignore friction in the case of this law?
 
 

Explain what is happening to the energy in the experiment described in Table 5-1 (p.183).
 
 
 

Use conservation of energy to analyze the following scenario (and Show Your Work!):  Wiley Coyote (mass = 25 kg) climbs up a 50 m ladder.
How much work did he do?
 
 

At the top of the ladder, how much gravitational potential energy does he have?
 
 

When he jumps off of the top of the ladder, how much kinetic energy does he have as he reaches the ground?
 
 

How fast is he going?
 
 


Copyright Alexplorer. Some items taken from or adapted from other materials. This page is free for use in a classroom setting.
Back to the Physics index