Estimate the average force exerted by a shot-putter

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SUMMARY

The average force exerted by a shot-putter on a 7.5 kg shot can be estimated using Newton's second law (F=ma) and the work-energy theorem. Given that the shot is moved through a distance of 3.0 m and released with a speed of 11 m/s, the acceleration can be calculated using kinematic equations. Utilizing the work-energy theorem may provide a more efficient method for determining the force without extensive calculations involving kinematics.

PREREQUISITES
  • Understanding of Newton's second law (F=ma)
  • Familiarity with kinematic equations
  • Knowledge of the work-energy theorem
  • Basic principles of mechanics
NEXT STEPS
  • Learn how to apply kinematic equations to calculate acceleration
  • Study the work-energy theorem and its applications in mechanics
  • Explore examples of force calculations in projectile motion
  • Investigate the relationship between force, mass, and acceleration in various contexts
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and force calculations, as well as educators looking for effective teaching methods in these topics.

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Homework Statement



Estimate the average force exerted by a shot-putter on a 7.5 kg shot if the shot is moved through a distance of 3.0 m and is released with a speed of 11 m/s.

Homework Equations



F=ma
using cos and sin?

The Attempt at a Solution



not sure how to begin
 
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Use the kinematics equations to find the acceleration first.
 
kuruman said:
Use the kinematics equations to find the acceleration first.

An equivalent approach would be to use work and energy, and the work-energy theorem, and I think it might save the TS some grunt-work with the kinematic equations.
 

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