Overcoming static friction - easy

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SUMMARY

The discussion centers on a physics problem involving a 100kg man and a 1500kg elephant engaged in a tug of war, with a static friction coefficient of 1.0. The calculated force required to move the elephant is 14,700 N, derived using the equation Ff = μs * Fn, where FN is the normal force. If the man could exert this force, he would slip due to the insufficient frictional grip, potentially leading to a fall. The conversation emphasizes the importance of understanding static friction in practical scenarios.

PREREQUISITES
  • Understanding of static friction and its coefficient
  • Knowledge of Newton's laws of motion
  • Familiarity with basic physics equations, particularly Ff = μs * Fn
  • Concept of normal force (FN = mg)
NEXT STEPS
  • Study advanced applications of static friction in real-world scenarios
  • Explore the effects of different surfaces on frictional forces
  • Learn about dynamic friction and its differences from static friction
  • Investigate the implications of friction in sports physics
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of friction in mechanical systems.

joel amos
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Homework Statement


A very strong 100kg man is having a tug of war with a 1500 kg elephant. The coefficient of static friction for both on the ground is 1.0.
a) Find the force needed to move the elephant.
b) What would happen if the man could actually exert such a force?

Homework Equations


Ff = μs * Fn
FN = mg

The Attempt at a Solution


a) Using the above equations, I got the total frictional force, and thus the applied force to be 14,700 N. Is this correct?
b) The man would slip and fall. <----- Is that what they're looking for?
 
Last edited:
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hi joel! :smile:
joel amos said:
a) Using the above equations, I got the total frictional force, and thus the applied force to be 14,700 N. Is this correct?

looks good! :smile:
b) The man would slip and fall. <----- Is that what they're looking for?

he would slip, but why would he fall?

hint: what would happen on ice? :wink:​
 

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