Use Newton's second law to work out the acceleration, and then the speed and then use 1/2 m v2 for the energy.
I was looking to do something similar, but I don't have the mass of the fly wheel to determine the acceleration, nor the radius to determine the acceratory force from the torque...
Homework Statement
The moment of inertia of a fly wheel about it's axis is 20 kg m2. A constant torque of 40 N m is applied to the initially stationary fly wheel. Find it's rotational KE after 3 seconds assuming there is no friction in the system?
Homework Equations...
Homework Statement
The proposed maximum colliding beam energy, Ec, in the Large Hadron Collider is 7TeV per beam (proton-proton collisions). By a Lorenz transformation, show clearly that to produce the same centre of mass energy in a 'fixed target' interaction, the beam energy woulr have to...
Hi tiny-tim,
I thought the second one was right. The reason I am confused is that I know that the escape velocity from a planet is \sqrt{2gr}, and having noticed the similarity between the equation (2) I derived I wondered if I had made a mistake.
So, the second approach is the best way...
Homework Statement
I have solved the following question in two ways which give different answers. Both methods are similar but a little bit different so I think one is wrong. Can anyone advise me which (if either) of the answers is right?
A stuntman is preparing his next stunt. He needs...
Thank you for the time, I appreciate it!
What the program has predicted is what I would have expected, and as far I can see you have made any assumptions that are not the case, or at least significant enougth to alter the bow so significantly!
I have attached a very crude paint image od...
I think you have a point there! I had considered a hosepipe earlier but got the relative magnatude's of the curvature mixed up in my head. However the light source in significantly larger than the effect observed. The bow is ~2mm across, and the light source is ~10Cm before going through the...
PHOTOS! I have uploader them to flickr. It's my first time using this site so please let me know if it doesn't work. INcluded are photos of setup, effect and droplet size. the link is;
http://www.flickr.com/photos/58973961@N04/
I agree, it was purley by accident that I discovered this...
My apolgies! They are now attached. The camera is at ~1m from the droplets, the attached diagram should hopefully show where it is position, but it is next to at the light souce at the same height, just moved left by the amount dictaed by the 42 degree scattering angle.
.
The droplets are...
Excuse my use of x-plane, that wasnt really the best description!
I made an attempt to collimate the light using lens (the light source if just a flood light), but the len's where wrong but interestingly caused the effect shown in the photo. I think maybe the divegance of the light at the...
Hi yuiop,
Very amusing video, begs disbelief! I hadn't thought about a sprinkler, however what interested me in that video (after the commentry of course!) was that the curvature seemed to be less than that of a bow produced in particles in the atmosphere. As my rainbow is another step down...