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~christina~
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[SOLVED] box with spring coneected
2 Blocks of mass M and 3M are placed on a horizontal frictionless surface. A light spring is attatched to one of them and the blocks are pushed together with the spring between them. A cord initally holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of 2.00m/s
a) What is the velocity of the block of mass M?
b)find system's original elastic potential E, taking the M= 0.350kg
c) Is the original energy in the spring or cord?
d) Is the momentum of the system conserved in the bursting-apart process?
How can it be with no motion beforehand and plenty of motion afterward?
http://img208.imageshack.us/img208/6215/boxwithstringsb5.th.jpg
Ki= Kf
[tex] SOLVED[/tex] (figured it out)
Homework Statement
2 Blocks of mass M and 3M are placed on a horizontal frictionless surface. A light spring is attatched to one of them and the blocks are pushed together with the spring between them. A cord initally holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of 2.00m/s
a) What is the velocity of the block of mass M?
b)find system's original elastic potential E, taking the M= 0.350kg
c) Is the original energy in the spring or cord?
d) Is the momentum of the system conserved in the bursting-apart process?
How can it be with no motion beforehand and plenty of motion afterward?
http://img208.imageshack.us/img208/6215/boxwithstringsb5.th.jpg
Homework Equations
Ki= Kf
The Attempt at a Solution
[tex] SOLVED[/tex] (figured it out)
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