Is Urgent Online Help Available for Statics Problems?

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STATICS PROBLEM! Need urgent help!

Hi boys(and girls),

I got stuck at a few questions of statics, and since I have to send the correct answers TONIGHT... I tried them all, but some answers I just don't know...

Please help me with the following problems, which are displayed in the attachments.

Thanks! Appreciate your help!

Grts,
Jasper
 

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You need to post your attempt to achieve the correct answers, we can't just solve them for you. Do you show any work in the attachments?

Thanks
Matt
 

Thread 'Prove that the integral is equal to ##\pi^2/8##'

Prove $$\int\limits_0^{\sqrt2/4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx = \frac{\pi^2}{8}.$$ Let $$I = \int\limits_0^{\sqrt 2 / 4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx. \tag{1}$$ The representation integral of ##\arcsin## is $$\arcsin u = \int\limits_{0}^{1} \frac{\mathrm dt}{\sqrt{1-t^2}}, \qquad 0 \leqslant u \leqslant 1.$$ Plugging identity above into ##(1)## with ##u...
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