General discussion

From the circular disk of diameter 100mm is cut out a circle whose diameter is the radius of the disk. F ind the center of gravity of remaining portion.

Determine the support reactions.

how to solve the tension force of a two ropes connected in a box of 100lb and is being hang. the angles of the ropes are 60? Meaninig the box is in the center.

Hello Gents,

Q:/ What is the reason for letting the inner boundary condition = (-1) when solving the radial flow of infinite form of diffusivity equation, and I would like to know what would happen if I didn't equate it with (-1).

As in the attached pic: https://i.imgur.com/AVesmHM.png

and here is the original pdf if you want: http://www.pe.tamu.edu/blasingame/da..._DimLssVar.pdf

There is this topic on virtual work method of analysis a structure that's giving me some headache.....am inviting anyone interested to help us as a group discuss this topic,

Can anyone help to solve this question????

Good day,

I got stuck finding the manual solution for this problem without relying to the solve function of Casio calculator

The original equation was

[(1+x)⁴⁰] -1 = (181205.95/3000)x

Then I tried using properties of logarithm and I simplified it to this equation:

[ln(181205.95/3000)]/40 = ln(1+x) - (1/40)[ln(x+3000/181205.95)]

0.102526 = ln(x+1) - 0.025ln(x+0.0165557)

Answer: x = 0.02

A hollow sphere 6 in inside diameter is rotated on a cable at 100 rpm. If the cable is 6 ft long and makes an angle of 30 degrees with the horizontal, what is the pressure in the center of the sphere if it is full of water? what is the equivalent specific weight at that point?

– A reinforced concrete girder is subjected to torsional moment from the loads on the cantilever
frame. The following factored forces are computed from
this beam:

Factored moment, Mu = 290kN-m
Factored shear, Vu = 220 kN
Factored torque, Tu = 180 kN-m

What are the books with best explanations of the subject matter that are mostly used as reference in the subjects:
-Safety Management
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