Recent content by ernay

I've been looking around online and I've seen similar problems where they use average pressure... which is (p*g*h)/2 p is density btw... is this the right approach, then just use P=F*A?

Homework Statement A swimming pool has dimensions 30.0 m and 10.0 m and a flat bottom. When the pool is filled to a depth of 2.00 m with fresh water, what is the force caused by the water on the bottom? On each end? On each side? Homework Equations B = pgV P1+pgh+1/2pv2 The Attempt...

Homework Statement A student of mass m=40 kg is standing on the edge of a uniform, frictionless turntable, with diameter d = 5m and mass M=400 kg. The student and the turntable are initially rotating counterclockwise together about a fixed axis through the center of the turntable with an...

Thanks for the help, I get it now... Just another question though... When we consider the pulley to massless does it mean that the tensions are equal? Since T1-T2=Ia/r2 Or am I jumping to a false conclusion? Thanks again

Homework Statement In the Atwood's machine shown below the masses of the blocks are ma = 3kg and mb = 2kg. The moment of inertia of this frictionless pulley about its axis is Ic = .6 kg m2 and its radius is Rc = .2m. Note that there is no slipping between the rope and the pulley. Find the...

I always liked the Khan academy videos.. he has various videos ranging from physics to calc to some statistics.. i haven't watched the pre calc videos tho.. so i have no idea what those are like.. http://www.youtube.com/user/khanacademy

Ahh I now get all of it.. thank you very very much... Seems i was making a very simple mistake for 3d all along... and for 1a i now get it.. thank you very much again Chi Meson For President! =P EDIT : also for 1 a... the other block would have the same acceleration correct?... seems logical...

I just confirmed my answer for number 2 on wikipedia.. but then again.. it is wikipedia.. again any help is much appreciated... 1a in particular and 3d are what i need help with

I'm sorry but I'm still not getting 1 a... I understood what you said but if i were to do total force divided by total mass wouldn't it simply come out to g? this is what i understood from what you said.. F/M = (2M)(g)/(2M) where the 2M would cancel and itd simply be g? I am guessing the...

Homework Statement ok well this was my homework over the weekend and i think i got an idea of how to solve these but I am not quite sure on my answers... I've scanned the problems because they all require diagrams that must be seen to solve the problems...