Recent content by Smouk

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    Pendulum on the end of a rotating disk

    Yeah I just didn't really understand the exercise. I even drew the centripetal force wrong as the pendulum doen't swing like that but outwards, I just ended up figuring it out. Decomposed both the gravitational force and the inertia (don't really want to say centrifugal force :P) into vectors...
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    Pendulum on the end of a rotating disk

    Homework Statement There's a pendulum with mass m and longitude L strapped to a disk with radius R that rotates with an angular velocity ω. Calculate the angle that the pendulum is shifted (Φ) depending on ω. You are given m, L, R, ω, g. Calculate Φ depending on ω. Little drawing (with my...
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    Is the centripetal force a projection of tension?

    Well, this might be the stupidest question ever, but whatever. I was just thinking about a problem where a pendulum is attached to something that spins around itself (image below) and thought that maybe Centripetal Force might be a projection of tension on a vector that is perpendicular to ω...
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    Object moving on a spiral figure

    Homework Statement We've got an object/person in the center of a cicrcle that spins around with an angular velocity ω. That same object is moving at a constant speed k with the direction of the radius, that is from the center to the outside of the sphere. That object describes then a spiral...
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    B How do rockets propel themselves up?

    I've searched for it and I think you mean the "Tsiolkovsky rocket equation" which from what I´ve read it describes " the motion of vehicles that follow the basic principle of a rocket: a device that can apply acceleration to itself (a thrust) by expelling part of its mass with high velocity and...
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    B How do rockets propel themselves up?

    Well, first thing, I am new to this forum and it looks pretty good and I'm looking forward to reading more from it and post more questions. Well rocket propeling (or anything that uses some material to propel up when shooting it down) seems pretty straight forward at first, you have some gas...
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