What is the Velocity at the Bottom of a Roller Coaster with Given Parameters?

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SUMMARY

The discussion focuses on calculating the velocity at the bottom of a roller coaster with a radius of 19.6 meters, where the velocity at the top is 14 m/s and the apparent weight is zero. Participants emphasize the importance of applying the principles of centripetal force and energy conservation to solve the problem. The key equations referenced include Mv²/r = mg for the top of the coaster and the relationship between potential and kinetic energy. The solution requires understanding how to transition from forces at the top to velocities at the bottom using energy conservation principles.

PREREQUISITES
  • Understanding of centripetal force and its equation Mv²/r
  • Knowledge of gravitational force and its impact on motion
  • Familiarity with the concepts of potential and kinetic energy
  • Ability to analyze free body diagrams in physics
NEXT STEPS
  • Study the conservation of mechanical energy in roller coaster dynamics
  • Learn how to derive velocity from centripetal force equations
  • Explore the relationship between potential energy and kinetic energy in motion
  • Practice solving problems involving forces and motion in circular paths
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the dynamics of roller coasters and the application of energy conservation principles in real-world scenarios.

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Homework Statement


A roller coaster with radius of 19.6 and at the top of the roller coaster the veloctiy is 14 m/s and the apparent weight is 0. Calculate the veloctiy at the bottom of the roller coast?

Homework Equations





The Attempt at a Solution


I can see that Mv^2/r=mg at the top but i don't get how to solve for the veloctiy at the bottom of the equation of mv^2/r = Fn-mg. Am I looking in the right direction? I've done the force body diagram but the only way i can see to get out the velocity is with mass, am I missing an equation?
 
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Think about potential and kinetic energy.
 

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