Recent content by escobar147

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    What Size I Beam for 5m Roof Span Supporting 20,000 kg?

    I am designing a roof which is 5 metres wide and 10 metres long. the total weight it has to support is 20,000 kg. there will be two I beams spanning the 5 metre width, each i beam is 3.33m apart. what dimensions should i use for my i beam? any help would be massively appreciated, is...
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    Convert a moment KNm to N/mm^2?

    I have a moment value: 921.84 KNm which I have to divide by a stress: 275 N/mm^2 What conversion could I do to get this in the form of cm^3? 3 hours ago - 4 days left to answer.
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    How Do You Convert mm of Head into Pascals for Aerodynamics Testing?

    An aerofoil (chord c = 0.152 m; span b = 0.30 m; NACA 0012 section) is mounted in a drag balance. A comb of Pitot and static tubes is mounted downstream of the aerofoil. Tubes numbered 5, 12, 21 and 28 measure static pressure, while the rest measure Pitot (stagnation) pressure. The tubes are...
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    How Do You Convert mm of Head into Pascals for Aerodynamics Testing?

    it's the measurement of wake traverse behind anaerofoil, the pitot static tube is upstream and connected to a manometer, whilst the rest are pitot (stagnation) tubes and are located downstream and also connected to a manometer
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    How Do You Convert mm of Head into Pascals for Aerodynamics Testing?

    is it not head?
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    How Do You Convert mm of Head into Pascals for Aerodynamics Testing?

    Referenced pitot pressure = 107 (mm) referenced static pressure = 525 (mm)... find referenced dynamic pressure by subtracting static pressure from pitot pressure and converting to Pascals... how on Earth do you convert it to pascals?
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    What method has been used in this solved integration problem?

    limits from τ=0 to t ∫τsinωτ dτ answer: [-τ/ω + 1/ω^2(sinωτ] limits τ = 0 to t = -t/ω(cosωt) + 1/ω^2(sinωt)Could someone please explain the steps? is this an integration by parts method?? when i attempt integration by parts, with u = τ & dv = sin(ωτ) dτ I get the following...
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    When integrated 1/y^2 becomes -1/y why is this?

    i still don't understand
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    Laplace tranforms, what method would you use to solve this question?

    Use the Laplace Transform of f (t) = t2 sin 7t to find the Laplace Transform of f' (t) = 2t sin 7t + 7t2 cos 7t also note that: the laplace transform of t^2 sin ωt = (6ωs^2 - 2ω^3) / (s^2 + ω^2)^3 I don't even know how to approach this so any help whatsoever would be hugely appreciated
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    Estimating f(2) using Cubic Interpolation

    If a cubic function satisfies f(0) = -32, f(1) = 0, f(3) = 10 and f(4) = 0, use cubic interpolation to estimate f(2) I'm not sure how to approach this since I have only ever done quadratic interpolation and linear interpolation, is it just an extension of the lagrange interpolating...
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    Undergrad Find the cubic polynomial satisfying f(0) = -5, f(1) = 0, f(2) = 15, f(3) = 52.?

    Here is the correct answer: 2x^3 - x^2 + 4x - 5 My attempt only gives me one cubed term and the other terms are also marginally off, any help on who can show me how to get the correct answer will be hugely appreciated
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    Undergrad Use linear interpolation to estimate sin 36 using as your 'known' values 0 & 60?

    thanks
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    Undergrad Use linear interpolation to estimate sin 36 using as your 'known' values 0 & 60?

    here is the answer: 36/60 = x/.8660 60x = .8660 x 36 60x = 31.176 x = .5196 however, where does the value: 0.8660 initially come from? any help would be appreciated
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    When integrated 1/y^2 becomes -1/y why is this?

    when integrated 1/y^2 becomes -1/y why is this?
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    Solve this differential equation using separation of variables

    where has the 1 come from? is it the coefficiant of dy/dx?