Work done by quadratic air resistance.

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SUMMARY

The discussion focuses on calculating the work done by quadratic air resistance on a baseball dropped from a height of 381 meters. The baseball, with a mass of 0.145 kg and a radius of 0.0366 m, experiences a reduction in energy upon impact due to air resistance. The work is expressed mathematically as an integral involving the terminal velocity and the hyperbolic tangent function. The initial calculations yielded incorrect results, indicating a need for further refinement in the approach to account for air resistance accurately.

PREREQUISITES
  • Understanding of quadratic air resistance principles
  • Familiarity with integral calculus
  • Knowledge of terminal velocity concepts
  • Basic physics of free fall and energy conservation
NEXT STEPS
  • Review the derivation of terminal velocity for spherical objects
  • Study the application of hyperbolic functions in physics
  • Learn about energy loss due to drag forces in fluid dynamics
  • Explore numerical methods for solving integrals in physics problems
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Physics students, educators, and anyone interested in the dynamics of falling objects and the effects of air resistance on motion.

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Homework Statement



A baseball of mass 0.145kg and radius 0.0366m is dropped from a tower 381m high.

Homework Equations





The Attempt at a Solution



Work=integral(from 0 to 381): c(2) (terminal velocity)^3*(tanh(t/(characteristic time)))^3 with respect to time.

Gets me really strange (incorrect) numbers
 
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You could also look at it this way: the object would have a certain energy when it hits the ground if it was freefalling with no air resistance. It has less energy when it hits the ground if it falls with the air resistance. The difference is due to the work of the air resistance force.
 

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