Masses on a frictionless table with the bottom mass connected to a wall by a spring

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  • #26
kuruman
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If I try to write newtons laws for both masses in this scenario the force of friction would no longer be acting
That is incorrect. The contact between the masses does not become frictionless all of a sudden. There will still be friction acting on both masses, but of the kinetic variety.
 
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That is incorrect. The contact between the masses does not become frictionless all of a sudden. There will still be friction acting on both masses, but of the kinetic variety.

So What happens when the maximum is exceeded, the top mass and bottom mass start moving with different accelerations, am=μg aM=(μmg-kx)/M=(m*am-kx)/M (previous to that static friction kept mass m glued to mass M causing both blocks to accelerate at the same rate) until at some point the top mass will fall to the ground.
 
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haruspex
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So What happens when the maximum is exceeded, the top mass and bottom mass start moving with different accelerations, am=μg aM=(μmg-kx)/M=(m*am-kx)/M (previous to that static friction kept mass m glued to mass M causing both blocks to accelerate at the same rate) until at some point the top mass will fall to the ground.
It might fall off, or static friction may be restored before that happens. See post #24.
 

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