Info hunt \ maximum frictional force

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Homework Help Overview

The discussion revolves around understanding the concept of maximum frictional force in the context of a physics problem involving a body with a mass of 25 kg on a level floor, with a coefficient of friction (mu) of 0.4. The original poster seeks guidance on how to approach the problem without receiving direct answers.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster expresses a desire for guidance in understanding the problem and mentions a lack of prior physics education. They inquire about the nature of frictional force and its role in the scenario presented. Some participants discuss the relationship between frictional force, the coefficient of friction, and normal force, while others suggest looking up relevant concepts.

Discussion Status

Participants are actively engaging with the problem, with some providing insights into the equations related to friction. There is a progression in the discussion as the original poster outlines their approach to calculating the maximum frictional force, and others confirm the correctness of their reasoning without reaching a definitive conclusion.

Contextual Notes

The original poster is in a self-learning program with limited prior knowledge of physics, which influences the nature of the discussion and the types of questions being asked.

Colin19
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First of all I would like to clearify that I am in a programme that gives physics questions with littile previous learning and relies on individual determenation and efforts to deliver answers " Self learning " , " Info Hunt "
In the time most of you were learning science
I was busy learning English ,
I never studied physics in my life in Arabic nor in English
So please have patient and help me through my beginning
Hopefully that is answering a lot of assumptions
" Oh this guy is playing " " Get serious " ...etc

Question :
A body with mass 25 kg lying on a level floor has a steadily increasing horizontal force applied to it . If mu = 0.4
Calculate the maximum frictional force applied ?

Now I'm not asking for a quick answer like past attempts ,
I'm asking you to guide\help me understand\solve it my self
As I know no method or a clue of what to do ...
 
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Colin19 said:
First of all I would like to clearify that I am in a programme that gives physics questions with littile previous learning and relies on individual determenation and efforts to deliver answers " Self learning " , " Info Hunt "
In the time most of you were learning science
I was busy learning English ,
I never studied physics in my life in Arabic nor in English
So please have patient and help me through my beginning
Hopefully that is answering a lot of assumptions
" Oh this guy is playing " " Get serious " ...etc

Question :
A body with mass 25 kg lying on a level floor has a steadily increasing horizontal force applied to it . If mu = 0.4
Calculate the maximum frictional force applied ?

Now I'm not asking for a quick answer like past attempts ,
I'm asking you to guide\help me understand\solve it my self
As I know no method or a clue of what to do ...
What do you know about frictional force ?
 
Colin19 said:
First of all I would like to clearify that I am in a programme that gives physics questions with littile previous learning and relies on individual determenation and efforts to deliver answers " Self learning " , " Info Hunt "
In the time most of you were learning science
I was busy learning English ,
I never studied physics in my life in Arabic nor in English
So please have patient and help me through my beginning
Hopefully that is answering a lot of assumptions
" Oh this guy is playing " " Get serious " ...etc

Question :
A body with mass 25 kg lying on a level floor has a steadily increasing horizontal force applied to it . If mu = 0.4
Calculate the maximum frictional force applied ?

Now I'm not asking for a quick answer like past attempts ,
I'm asking you to guide\help me understand\solve it my self
As I know no method or a clue of what to do ...

Look up "static friction".
 
SammyS said:
What do you know about frictional force ?

I know that friction is the force that is acting against motion
What I understood is, the term frictional force means basically the amount of resistance that the friction can demonstrate against a body's motion acted upon by an opposite force
to prevent it or slow it down .
 
My approch to solve now is :
to get the max friction I'll use this equation :
f = mu F
f : max friction
mu : coefficient of friction
F : Normal force
,
What I have in the Question
Is the mass 25kg and the mu 0.4 , and as it is laying on a level floor
I got g 9.81 m\s
,
So to apply the first equation I would need to find the normal force by this one:
N= m g
...
Gents am I going through the correct way ?
 
Colin19 said:
My approch to solve now is :
to get the max friction I'll use this equation :
f = mu F
f : max friction
mu : coefficient of friction
F : Normal force
,
What I have in the Question
Is the mass 25kg and the mu 0.4 , and as it is laying on a level floor
I got g 9.81 m\s
,
So to apply the first equation I would need to find the normal force by this one:
N= m g
...
Gents am I going through the correct way ?

So far so good. You've got the normal force, so what's the maximal frictional force?
 
f = mu F
f = 0.4 x 245.25
f = 98.1 N
Answer is
Maximum frictional force is 98.1 N
?
 
Colin19 said:
f = mu F
f = 0.4 x 245.25
f = 98.1 N
Answer is
Maximum frictional force is 98.1 N
?

Looks good :smile:
 
Many thanks
 
Last edited:

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