Recent content by nemesis24

Im just trying to show that there is a different bettween the two sets of data that would reject a null hypothesis, i thought a paired (or to be exact a unpaired) test would show this

Yeah maybe i should start again from the beginning (PS thanks for the reply and sry for the late post but i lost internet for a few days so only just saw the update), also i should point out my background is not in stats at all so i may be throwing some terms about that i picked up from the...

Yeah it seems like i should expand on what I am trying to do to best describe the work i want to do. I have a lot of data where i have to show mathimatically there is a deviation from the mean of the sample data, i have decided i should do a paired t-test to show the variance. However, i am...

I am doing a summer project where i have got lab data of fluxuating flow patterns in a flume, the data i have plots discharge against time and my aim is to find whether a majority of measurements are close to the mean. I thought the best way to do this would be with standard deviation where i...

anyone?

hello there i have this question that seems quite compilcated, i was hoping some one could help me into solving it. basically i have a frame that can be seen in the diagram, i have to work out the vertical and horizontal components at point D. i was curious as to how i can do it. i know it...

im sorry but what do you mean by setting the summations = to 0 is that just taking moments at a point and saying it is zero? also wouldn't the UDL have to cross 0 on the SFD at 2.15 as that is 4.3/2?

o that's supposed to be 367.38kN my bad! ok so on the SFD is the 0 value supposed to be 2.15m? (the middle of A to B?) if it is then wouldn't the maximum bending moment be half way of A to B +/- the 17 kN? the other point i was curious as to knowing is at what point would i hit 0 on the...

here is what i have got so far, but i do not know what the distance on the BMD when the second point is supposed to hit 0, for example i know that when above point A we have a lift while at d we have the greatest bending moment. i know that at c it intepets the x-axis but i don't know at what...

so would my final BMD look like this: updated: http://img518.imageshack.us/img518/4980/problem3up7.th.jpg i believe that at the supports we would not have any bending moments as they will be 0, however, i am unsure what would happen when the beam mets the udl

so is this what you mean? http://img167.imageshack.us/img167/8245/problem2uy7.th.jpg or do i have to take the udl into account? ie +42.63 kN

would it be 17*0.7=11.9 kNm? are you saying that i should treat the two separate parts of the beam as individual so i look first at the normal beam then the udl? so hence there is no unknow value of x distance?

it does but i have to ask when i finish taking moments at either C or B i have two equations do i solve these simitanly or do i just use the equations to find the bending moment of at a cetain point eg equation C i say x=1,2,3,4 etc and calculate the bending moment for that point. or do i just...

i have them lined up with one on top of the other but i have no idea about how to find the bending moments, so far i have tried to split the beam into two parts and try to solve for x but i get figures that cannot be correct. i am merely asking how you calculate bending moments not to solve...

i have the following problem and i have worked out the resultant forces that say A=397.8kN while B is 367.4 kN and the force of the UDL is 748.2kN. i have worked out the shear force diagram but am lost as to how to draw the bending moment for this problem any help would be appreicated. thank you