Recent content by hc23881

but when i have the x and y components of the forces at A. they arnt directly on the x and y-axis given , therefore i have to find both the x and y components of those forces. that is what i am having trouble with..

even if i change the axis? then it wouldn't be only in the y direction.. but if i keep the axis as shown in the picture i don't know the angle to use for Ay because it cuts the triangle in a way where i don't know the side lengths and therefore can't find the angle

thanks, but I am still stuck. So I have figured out all the angles(picture attached) but I still can't figure it out. if i make my coordinates line up with Ax and Ay what degrees I would use for the x and y component of the 500N force. (when I am taking the moments about A and the sum of the x...

[PLAIN]http:// I am having trouble with this truss problem. I have attached my work so far. I used the entire structure as a system first and did the sum of the forces equals zero but I don't know how I can finish the moment at a because I don't know the x and y distances for the 500N force...

ahh i got it! thanks!

^^ I don't understand when people respond to a question like this. When people ask a question, they are unsure and want advice. Some suggestions to help them think about what they may be interested in... he's not asking you to write it for him...

A refrigerator in a hospital removes 40 kW of heat from a space used for blood storage. The coefficient of performance of the refrigerator is 8. What is the work (kJ) required to operate the refrigerator continuously for one day? What I attempted to do: W in = Qin/COP therefore, Win =...

I am having trouble with this problem. I have drawn the diagram , but don't know how I can attach it onto this post. But, for a I have COP= Qin/Wcycle = 650 J/m^2 s / Wcycle = 32.5 kW/Wcycle --> Wcycle = 10.15 kW. But,that is the wrong answer.[PLAIN]http://

I know there are a number of ways to do this problem, to increment the series etc. but, would someone please be able to explain how they get the answers for this problem simply and easily ? Thanks! A screen shot is attached