Recent content by physicx_1

thanks. this information is enlightening. can you tell me the formula for it? (maximum bending stress and deflections)

thanks for your reply. Oops, my bad. I now have uploaded "Figure 4". This is a first-year university question.

Homework Statement QUESTION 2 (Total 20 marks) Figure 4 below shows a diagrammatic section of the floor of a typical house suspended over a garage. The steel beam shown in section spans 7.2 metres centre to centre of supports. The floor, including an allowance for the self weight of...

Homework Statement The simply supported timber foot bridge shown in figure 5 spans 7 metres and, as shown, is carried by two Engineering grade Douglas Fir beams. The uniformly distributed load due to the self weight of the foot bridge and beams is 96 kg/m. The bridge is required to carry a...

can anyone help? I know to break into simpler shapes. and I did. however there are some irregular shapes even if I was to break them into smaller ones. what do I do to deal with those?

but once i do that, and find the c of g of those shapes, how do i relate them together?

Homework Statement CALCULATE POSITIONS OF THE CENTROID OF THE SHAPE SHOWN BELOW GIVE DIMENSIONS FROM POINT O ALONG THE HORIZONTAL X-DIRECTION, AND THE VERTICAL Y-DIRECTION. [PLAIN]http://img402.imageshack.us/img402/738/unledgj.jpg Homework Equations The Attempt at a Solution I...

can anyone help and do this 3rd question?

thanks for your reply! ok, so according to your response, using (=1/2mv2), I get, 0.5 x 12 x 6sq. = 384 joules is that how the first question is meant to be worked out? if so, then you substitute 384 into mgh? and that's how you get the 2nd question? I did that and using MGH for question 2...

Homework Statement A block of mass 12 kg is projected up a frictionless incline with an initial velocity of 8m/s. It just reaches a point B and then slides down again. A) what is the potential energy of the block at B if its potential energy at A is taken as zero? b) what is the...

yea, there is a balance. but I never said it would move or anything like that. I've gotten answers of a = 1359.31 b=2785.49 can anyone check of that's right?

Homework Statement angle 1 is 60 angle 2 is 25 and the suspended mass is 120kg CALCULATE THE TENSIONS FORCES A, B, AND C [PLAIN]http://img52.imageshack.us/img52/1412/unledfm.jpg Homework Equations The Attempt at a Solution I understand you have to use some triangles and some trigonometry. But...

Thanks. Looking forward to my stay here :) So what does M stand for? Moment?

Homework Statement Find the problem of the centroid of each of the shapes http://img29.imageshack.us/img29/7563/64279412.jpg this makeshift diagram is not as accurate as it should be, but it is a plain T shape that is perfectly symmetrical. Homework Equations...