Conservation of energy problem.

[the whizz]

Homework Statement

problem is here

http://img151.imageshack.us/img151/1675/question7ql6.th.jpg http://g.imageshack.us/thpix.php

Homework Equations

The Attempt at a Solution

for the #7 part

http://img232.imageshack.us/img232/9079/problem7answerqq9.th.jpg http://g.imageshack.us/thpix.php

and for #8 here is where i wasnt too sure i was on the right track.

http://img222.imageshack.us/img222/1459/problem8answerth8.th.jpg http://g.imageshack.us/thpix.php

 

[the whizz]

due tomorrow...going to bed would like to see if I am on the right track.

 

[thomate1]

As a scientist, my response to this content would be that conservation of energy is a fundamental law of physics that states that energy cannot be created or destroyed, only transformed from one form to another. In the problem provided, it is important to recognize the different forms of energy involved, such as potential energy and kinetic energy. The equations used in the solution (such as the conservation of mechanical energy equation) are valid and appropriate for solving this type of problem. However, it would be beneficial to also include units in the final answer to ensure accuracy. In regards to the solution for #8, it appears to be on the right track, but it would be helpful to show the calculations and steps taken to reach the final answer. Additionally, it may be useful to consider any potential sources of error in the calculations. Overall, the solutions provided demonstrate a good understanding of the concept of conservation of energy.