May 2016

Strength of materials: How plastics are classified?

Submitted by vinayakjm on May 1, 2016 - 6:49pm

How plastics are classified?
What are reinforced plastics?
Are these plastics are stronger than alloy steels?

Differential Equation

Submitted by crizh del on May 3, 2016 - 8:21pm

Geometrical Application

Find the eq. of the curve such that the x-intercept of the tangent line at any pt. (x, y) on it divided by the square of the ordinate is a constant.

Roydon Jude S. Samudio's picture

Engineering Books: What are the best books for the following

Submitted by Roydon Jude S. ... on May 6, 2016 - 1:17pm

What are the most used and best books on these subjects?
1. Surveying
2. Differential Equations
3. Statics
4. Engineering Electronics and Electricity
5. Engineering Economy

Name of the book plus author. Please kailangan ko po now ngayong summer.

Moment Area theorem problem. please help

Submitted by Daranith on May 8, 2016 - 9:31pm

I've been trying to solve the following question for 2 days now and i can't seem to be able to. can someone help me please ?

For the beam shown in Figure 3, the support at A is fully fixed. The beam is tapered however you may consider it to be a beam of 3 varying sections.

Take:
Beam A to B as having 3 times the I value of beam D to end, Beam B to D as having 1.5 times the I value of beam D to end and Beam D to end is 310 UB 46.2 with I = 100 x 106 mm4. Tip: this may be easier to solve using superposition.

Richard James Mayola Librada's picture

Timber Design

Submitted by Richard James M... on May 14, 2016 - 10:50am

Problem 1005
A timber beam 6 in. by 10 in. is reinforced only at the bottom by a steel plate as shown in Fig. P-1005. Determine the concentrated load that can be applied at the center of a simply supported span 18 ft long if n = 20, fs ≤ 18 ksi and fw ≤ 1200 psi. Show that the neutral axis is 7.1 in. below the top and that INA = 1160 in.4.

Etteneaj Orachab's picture

equation of the circle

Submitted by Etteneaj Orachab on May 15, 2016 - 6:46am

find the equation of the circle tangent to 3x+y+14=0 and x+3y+10=0 w/ radius square root of 10.
please someone Help me in this equations I really do need Badly some help.

Etteneaj Orachab's picture

equation of a circle

Submitted by Etteneaj Orachab on May 15, 2016 - 11:12am

what is the equation of a circle touching the lines x-3y-11=0 and 3x-y-9=0 and having its center on the line 4x+y-27=0?

Solid Mensuration

Submitted by cleopath on May 19, 2016 - 8:33pm

The cyrstalline solid shown in the figure has two parallel planes; plane ABC is a right triangle and plane DEFG which is a rectangle. All face angles at B, D and E are 90°. Find the volume of the solid.1463661080420-632279955.jpg

Solid Mensuration: truncated octagonal right prism

Submitted by cleopath on May 19, 2016 - 8:42pm

The top plane of the truncated octagonal right prism shown in the figure below is 45° with respect to horizontal. Find the volume.14636615518501494221760.jpg

Juny Geraldizo Patierez's picture

could it be solvable?

Submitted by Juny Geraldizo ... on May 22, 2016 - 3:53pm

Help me for the solution of this problem:

What should be the maximum dimensions of a rectangular open box of a given volume V?