Recent content by donotremember

Excellent, thank you all for your help.

When I was a kid I used to drive my bike around on a frozen pond in the winter. The low coefficient of friction of ice makes turning very difficult!

Therefore the consensus will be: The correct answer to the first question is (d), NOT (b) The correct answer to the second question is (a), NOT (c) Do we all agree?

This is my intuition as well but it comes into conflict with supposed answers to the concept questions if we are to take "A ball is rolling freely on a flat surface" and "throw a tennis ball ... rolls freely on a flat surface for some time" to mean rolling motion ie. constant linear and angular...

Wouldn't that mean the answer to the question "So if a ball is rolling for some time on a surface with friction and moves onto a surface without friction it will stop rotating and only translate?" is 'no' since the ball will retain whatever translational and rotational motion it had just before...

This is a website where I have found an explanation of rolling motion: http://cnx.org/content/m14384/latest/ On this site it says: There is a surprising aspect of rolling motion on a surface (which is not friction-less) : “Friction for uniform rolling (i.e. at constant velocity) on a...

So if a ball is rolling for some time on a surface with friction and moves onto a surface without friction it will stop rotating and only translate?

This is a concept question from a previous final physics exam. The correct answer is (b) and my professor confirms this, but I can't understand why the answer is not (d) since the question seems to imply that the ball is already in rolling motion and that friction would not play a part. A...

Thank you for your responses. I have changed the formatting to make what I wrote more readable. I would like to know what parts of what I have written above would be considered invalid on an exam so I can learn them correctly or not use them. Mainly, I want to know if my proof of the...

Unfortunately my calculus book only has a short paragraph describing Leibniz notation and only uses them to define the derivative and does not give me a confident understanding of how to operate with differentials. I may return later and use the proper BBcodes to describe the mess I have...

I am very interested in math and I find calculus to be a particularly interesting subject, but one major problem I have with it is that I cannot find a consistent explanation of the rules of differentials (infantesimals) that explains all the things mathematicians do with them. I have truly...

http://www.singularitytracker.com/"

What equation is this? http://donotrememberthisaddress.com/images/simpsons.jpg is this from quantum mechanics? The RT makes me think of the gas constant times the temperature.

http://donotrememberthisaddress.com/images/braindamage.jpg

I believe the number of women in tech jobs correlates closely with gender equality in that area.