Conserv. of E and Work momentum

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SUMMARY

The discussion focuses on a physics problem involving the conservation of energy and work momentum related to a roller coaster. The roller coaster begins at point 1 with a speed of 1.70 m/s and experiences an average frictional force equal to one-fifth of its weight over a distance of 45 meters. Participants emphasize the importance of applying the energy conservation equation to determine the speed at point 2, highlighting the relationship between kinetic energy, potential energy, and work done against friction.

PREREQUISITES
  • Understanding of conservation of energy principles
  • Knowledge of work-energy theorem
  • Familiarity with basic physics equations related to motion
  • Ability to calculate forces and friction in physics problems
NEXT STEPS
  • Study the conservation of energy in mechanical systems
  • Learn how to apply the work-energy theorem in practical scenarios
  • Explore calculations involving frictional forces in motion
  • Investigate the effects of different speeds on energy conservation in roller coasters
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Students studying physics, educators teaching mechanics, and anyone interested in understanding the principles of energy conservation and work in dynamic systems.

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Homework Statement



suppose the rlller coaster in the figure passes point 1 with a speed of 1.70m/s. If the average force of friction is equal to 1/5th of its weight, with what speed will it reach point 2? the distance traveled is 45m.

Homework Equations


conserv. of E
and Work



The Attempt at a Solution


- i don't know how to do it.
 
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You start by writing the energy equation.
 

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