Physics coefficient of friction question

[Jasmin99]

Physics coefficient of friction question!

A 17kg box is being pushed by a 150N force. If the box is accelerating at 2.3m/s2. What is the coefficient of friction on the ground?FNet=μFn
Fn= 9.8x17= 166.6N
How can I find the fnet?

 

[darkxponent]

Hi Jasmin99. Welcome to PF.

You should read the how to ask for help forum. Will you specify where you are having problem?.

 

[Jasmin99]

Sorry! I'm not sure how to find the Fnet.

 

[darkxponent]

Okay. Can you draw the FBD of the object?

 

[Jasmin99]

Here is my work:
Fnet= 150-(17)(2.3)
Fnet= 110.9N
Fnet=uFn
110.9=u166.6
U=0.66
Not sure if I did it right.

 

[462chevelle]

http://library.thinkquest.org/10796/formula.htm

http://library.thinkquest.org/10796/ch1/ch1.htm

chapter 4 is force and friction. this is where I learned basic physics.

 

[barryj]

The answer looks correct

 

[Jasmin99]

Thanks for the help everyone! I have figured it out now.

 

[judas_priest]

Here is my work:
Fnet= 150-(17)(2.3)
Fnet= 110.9N
Fnet=uFn
110.9=u166.6
U=0.66
Not sure if I did it right.

Yup, you've got it right. Make sure you post your attempt at the time of asking the question itself.