Physics Help Forum Spring is stretched by l

 Energy and Work Energy and Work Physics Help Forum

 Feb 19th 2017, 08:59 AM #1 Junior Member   Join Date: Feb 2017 Posts: 2 Spring is stretched by l please, give me a tip Two objects with mass M and m are on a flat horizontal table. A horizontal spring with spring constant K is attached to the two objects as show in Fig If the system is released from rest when the spring is stretched by l, find the maximum velocity of the object with mass m. Imgur: The most awesome images on the Internet
 Feb 19th 2017, 10:19 AM #2 Senior Member     Join Date: Aug 2008 Posts: 113 max speed will occur when the spring relaxes to its uncompressed length ... (1) energy conserved $\dfrac{1}{2}kL^2 = \dfrac{1}{2}Mv_1^2 + \dfrac{1}{2}mv_2^2$ (2) momentum is conserved $Mv_1 = mv_2$ solve for $v_1$ in terms of $v_2$ and sub into the energy equation, then solve for $v_2$
 Feb 19th 2017, 11:10 AM #3 Junior Member   Join Date: Feb 2017 Posts: 2 thanks!!

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