Calculating Push & Pull Forces | Andre's Physics Questions

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SUMMARY

The discussion centers on calculating the forces involved in pushing and pulling an object, specifically a car stuck in snow. Andre highlights that rocking the vehicle, which involves both pushing and pulling, generates a greater force than solely pushing or pulling. This phenomenon is explained through the concept of resonance, where applying force at the natural resonant frequency of the object maximizes energy absorption and movement. The analogy of pushing a child on a swing illustrates how resonance can enhance the effectiveness of applied forces.

PREREQUISITES
  • Understanding of basic physics concepts, particularly force and motion.
  • Familiarity with resonance and its applications in physical systems.
  • Knowledge of oscillation and amplitude in mechanical systems.
  • Basic principles of pendulum motion and energy transfer.
NEXT STEPS
  • Research the principles of resonance in mechanical systems.
  • Study the physics of oscillation and how it applies to force application.
  • Learn about the dynamics of pendulum motion and its relevance to real-world scenarios.
  • Explore practical applications of resonance in engineering and physics.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the mechanics of force application and resonance in real-world situations.

DJLambo2K
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Hello,

I'm new to this forum with little knowledge of physics.

Does anyone know how to calculate the force created by pushing and pulling on object (i.e. a car stuck in the snow) versus pushing versus pulling?

I.e., which of the three forces is the greatest?

My physical experience tells me that when I rock (push and pull) a vehicle stuck in the snow it results in a much superior force to move the vehicle versus solely pushing or less so, pulling.

Many thanks,
Andre
 
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Rocking a car to get it out of a snow hole is an example of resonance. If you aren't familiar with resonance then you need to read up on that.

Many systems have a natural resonant frequency. If a source of energy (you) apply a force at the resonant frequency of the load (the car in the hole) it will absorb the maximum amount of energy from the source. The amplitude of oscillation will also be at a maximum. Once the amplitude of the oscillation reaches the depth of the hole it will come out.

The situation is similar to a man pushing a child on a swing. To get the child to swing higher and higher the man pushes the child at the resonant frequency of the swing (which can be modeled as a pendulum).
 
Many thanks for your quick reply!
I will look up and read up on resonance!

All the best!
Andre
 

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