Recent content by eonden

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    Undergrad Where does extra kinetic energy come from when removing a mass from an oscillating system?

    Thanks, completely forgot that when talking about closed systems no matter can be exchanged. Sorry for the stupid question.
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    Undergrad Where does extra kinetic energy come from when removing a mass from an oscillating system?

    https://ecourses.ou.edu/ebook/dynamics/ch10/sec101/media/d0121.gif We start from an original position and move the masses away from the origin to the maximum amplitude of the Simple Harmonic Motion. Once we get to that position, we let it contract by the spring force. Sorry for not including...
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    Undergrad Where does extra kinetic energy come from when removing a mass from an oscillating system?

    Suppose that we are working with a horizontal string with two masses attached. There is no friction on the floor and we move those two attached masses away from the equilibrium position by an undefined distance. Once the string with those two attached masses passes through the equilibrium...
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    Calculating Speed of Blocks in Pulley System with Spring Compression

    Yes, I also consider that the mass is not attached to the spring as you push the mass towards it. Harupex, you are right, that is why I only consider the spring in the first stage, as it's pushing forwards. Simon, I consider the height 0 when the spring is compressed, so that the potential...
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    Calculating Speed of Blocks in Pulley System with Spring Compression

    Homework Statement A block of 4 kg hangs from an ideal string which passes by a pulley and is attached at the other end to a block of 6kg, which is in turn lying on a rough table of friction coefficion μ=0.2. The block on the table is pushed towards a spring with elastic constant k = 60 N/m...