Recent content by Indira_Clueless

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    Loop-de-Loop with function of angle

    Thanks to both of you @Khashishi @haruspex :smile:
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    Loop-de-Loop with function of angle

    The height of OB would equal r - BC = r - cos(α) * r which you could also write as r * (1 - cos(α))
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    Loop-de-Loop with function of angle

    Ah sorry, wrong angle. :sorry: BC = cos (α) * r then, if my trigonometry doesn't fail me.
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    Loop-de-Loop with function of angle

    Ah and then I can use pretty simple trigonometry ... Yeah I think I get how this is a way.
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    Loop-de-Loop with function of angle

    I do know it can be, it depends on where you set the start point (for example of a movement. If I throw something down and I set the startpoint of the motion to where the fall started, then the height the object is gain would be negative). But my α would be negative too right? Since my...
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    Loop-de-Loop with function of angle

    I could calculate the upper part (positive part) of the height with sin(α) but I'm not sure what to do with the negative part :sorry:
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    Loop-de-Loop with function of angle

    @Khashishi if I set the general height of the circle to zero in the center, then the max height would be r and the starting height would be -r ?
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    Loop-de-Loop with function of angle

    @haruspex well I guess the length of BC would be √(CA2 - BA2) ? I mean, if I got you correctly ... /Edit: Which means the height would be r - BC ... right?
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    Loop-de-Loop with function of angle

    @haruspex To be honest, I don't know what you mean ... I'm sorry for being so supid at the moment, I'm just really feeling helpless and am apparently not able to comprehend easy questions. @Khashishi believe me, it took forever to come up with this bullshit (sorry)
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    Loop-de-Loop with function of angle

    Could you maybe help me calculate it correctly? I have been stuck for a while and probably miss the obvious (which I apologize for) /Edit: I can't really set the height of the middle of the loop to zero as it would alter the calculation for potential energy and by that alter the whole formula...
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    Loop-de-Loop with function of angle

    But how do I derive an equation for v(α) if not through trying to derive the height by α?
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    Loop-de-Loop with function of angle

    Homework Statement Task: [/B] On a friction free loop de loop, a object (m=600kg with passengers) moves with a velocity of vu = 120km/h at the lowest point of the loop. The loop has a radius of r=15m. The position of the object is given with the angle α. Derive the formula for the velocity...