Finding out the horizontal force required to make an object move.

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SUMMARY

The discussion centers on calculating the initial horizontal force required to move an ice fishing hut weighing 52 N across a frozen lake. The key equations involved are the static friction equations, μs = Fs/Fn, where Fs represents the static friction force and Fn is the normal force. Participants emphasize the importance of determining the coefficient of static friction between the hut and the ice, which is crucial for understanding when the hut will begin to slide. The absence of mass or acceleration data is noted, but the weight of the hut provides sufficient information to derive the necessary calculations.

PREREQUISITES
  • Understanding of static and kinetic friction concepts
  • Familiarity with Newton's laws of motion
  • Knowledge of how to calculate normal force
  • Ability to interpret and apply friction coefficients
NEXT STEPS
  • Research the coefficient of static friction for various materials, particularly ice
  • Learn how to calculate normal force in different scenarios
  • Explore Newton's second law of motion in practical applications
  • Investigate the effects of surface conditions on frictional forces
USEFUL FOR

Physics students, educators, and anyone interested in understanding the principles of friction and motion, particularly in practical scenarios involving forces on surfaces.

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Homework Statement


An ice fishing hut weighing 52 N sits on a dry, frozen lake.
What is the magnitude of the initial horizontal force required to make the ice fishing hut start sliding across the surface of the frozen pond



Homework Equations


μk = Fk/Fn or μs = Fs/Fn


The Attempt at a Solution


Find out Static Friction

Fnetx = FA + FS
Get rid of vectors so it rearranges to...
-FS + FA or FA - FS
See if m*a is equal to the Fnet
ma = -FS + FA
No mass or acceleration is given so I am unaware on how to discover the applied force which in turn would allow me to get the Static friction(max)
 
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Welcome to PF.

No mass [...] is given
Are you not told the weight of the hut?

Note:
http://www.u-picardie.fr/~dellis/Documents/PhysicsEducation/The%20coefficient%20of%20friction.pdf
... not sure how you are expected to find the coefficient of static friction: look it up?
 
Last edited by a moderator:
The mass of the hut can be determined from its weight. But what is more important to know is the static coefficient of friction between the hut and ice. The hut will move and accelerate when the applied force exceeds the max static friction force. If the ice is considered frictionless, it'll move with the slightest breath.
 

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