Recent content by Sum1

The following is a comment from a team member (genuine or not): "Our team certainly doesn't believe that we're the first. We're in contact with team members from the Da Vinci project, and if you watch our other "promo" video you'll see that we give a lot of credit to Yuri and other such...

You should change the title because it is misleading - not true! This one (Gamera) was the 3d official flight in May 13 2011 and "achieved unofficial lift-off of 3-5 inches and hover time of approximately 4 to 6 seconds." ("The Clark School expects to receive word on certification early next...

Sorry, it can be done and it will (with current panels) - a properly designed one. Just wait and you'll see.

Yesterday student engineers from Maryland University were testing for the first time their quad-rotor human powered helicopter "Gamera" -after nearly 3 years of development. They will continue their tests today too and there will be a live stream. promo...

One can find hundreds of free and paid video lectures, articles and (e)books as physics learning materials and probably a few animations, but is there a complete training software to present you the laws of physics, their relations etc with interactive animations and interactive problems guiding...

Nevermind, just found an example which used Kg and meters and the output torque unit was Newton meters! So it is N-m! :smile:

cepheid, thanks for the reply! Yes, it is the change in angular velocity not the average -that was stupid! But I'm still confused about the output torque unit of the above calculation. On this site http://nmbtc.com/Calculators/converter.swf" it has Kg-m and N-m torque units. Should I...

Homework Statement (Actually, this is not a homework, but a project I'm trying to accomplish but I have almost forgotten physics...) There is a disk weighting 100kg with a radius of 0.6 meters. What would be the torque needed to accelerate the disk from 0 rpm to 6 rpm in 10 seconds...