Recent content by chuffy

So I shouldn't put anything sown for Nodes 5 & 3 because both force & displacements are unknown & stating this is not correct as you can only have one unknown?

Thoes nodes are pinned yes How can I show reaction forces when it hadn't been analysed yet?

Homework Statement Complete a free body diagram for the truss structure with a weight attached to node 2 (this is known as 151N) Homework EquationsThe Attempt at a Solution I have attached my Free Body Diagram The diagram is to display what is know at the start of the problem before working...

yeah I've got the const vol bit wong

Homework Statement 1kg of helium in a closed system has 40kj added by heating & 100kj removed by work during a reversible polytropic process. The initial temp of the gas is 300K & the initial pressure is 100kN/m2 Q. find the final temp of the gas & pressure Homework Equations...

Thanks for the detailed reply The 1st part of your answer matches my thinking that θA is° flying clockwise However, the question states anti-clockwise However, I tried your method of being consistent with measuring the angles from the x-axis & going counter clockwise to get a positive...

Homework Statement Aircraft A is describing a circular flight path in an anti-clockwise direction at 125km/h Aircraft B is flying the same path but in the opposite direction at 225km/h. If the radius of the flight path is 5km, calculate the acceleration of A relative to B when Aircraft A is...

you mean digging online? The lecturer won't put up the solutions until 1 week before the exams

Hi, I've done a search and I know that other people have askled for a good textbook for fluid mechanics for a 1st year Mech Eng student however, I'd like to find one with a lot of worked example ploblems. I'm finding my course notes are too far a jump from the simple examples our lecturer...

cheers

if t=1 does this mean that m= 0?

pic of my working

Homework Statement x(t) = (t^2 -1) / (t^2 +1) y(t) = (2t) / (t^2 +1) at the point t=1 Homework Equations Line equation = y-y1 = m(x-x1) chan rule = (dy/dt) / (dx/dt) = dy/dx The Attempt at a Solution I find the y1 and x1 values by subing in t=1 to the x(t) and y(t)...

Yeah looks like I entered that wrong on the website so (50√3)/ 30 can be tided up by having the √3 on the bottom gives 150/(30√3) which gives 5/√3

took a pic of my work