What is the ratio of the car's apparent weight to its true weight?

  • Thread starter Thread starter Broken heart <3
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Broken heart <3

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A roller coaster car crosses the top of a circular loop-the-loop at twice the critical speed. What is the ratio of the car's apparent weight to its true weight?

from my notes i have that Velocity_critical= squareroot ( r w / m)

v = sqrt(rw/m)

so what i did was multiply v times 2 because the problem states were going at twice the critical speed.


so now my equation looked like

2v = sqrt(rw/m) .. I've tried and tried...Can someone go step by step with me please?
 
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