Info hunt \ maximum frictional force

AI Thread Summary
The discussion revolves around calculating the maximum frictional force for a 25 kg body on a level floor with a coefficient of friction (mu) of 0.4. The user seeks guidance on understanding the concepts of friction and the steps to solve the problem, emphasizing their lack of prior physics education. They correctly identify the need to calculate the normal force using the equation N = mg, leading to the calculation of maximum frictional force using f = mu * N. The final result is confirmed to be 98.1 N, indicating successful comprehension of the topic. The conversation highlights the importance of self-learning in physics.
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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