Oscillation - car losing contact with bridge

[jsmith613]

Homework Statement

See attachment

Homework Equations

The Attempt at a Solution

Ok so as the bridge is at a point ABOVE eqm acceleration is DOWN and at some point ACC down is greater than gravity acceleration.
This is all true but makes no sense to logically. How could the car lose contact with the bridge at this point. Is the car thrown into the air, or does the bridge simply accelerate DOWN faster than the car

 

[tiny-tim]

hi jsmith613!

… does the bridge simply accelerate DOWN faster than the car

yup!

 

[jsmith613]

hi jsmith613!


yup!

ok, trying to visuallise this.
I presume this will though, above eqm, as the bridge moves DOWN towards eqm??

 

[tiny-tim]

yes

 

[jsmith613]

yes

thanks