- #1

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How do you find friction??

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- Thread starter SwAnK
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- #1

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How do you find friction??

- #2

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Think of an equation that relates Force, distance, velocity and mass.

I can think of two.

- #3

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I used the v2(squared)=v1(squared) +2a*d

My accelration i got around -12.88m/s

and for the friction i got 0.643N?? does this sound right??

My accelration i got around -12.88m/s

and for the friction i got 0.643N?? does this sound right??

Last edited:

- #4

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Have you tried energy?

- #5

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- #6

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Your measured acceleration times your mass should equal your friction.

- #7

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[tex]F*d = \frac{m*v^2}{2} [/tex]

By conservation of energy.

By conservation of energy.

- #8

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Do you know much about free body diagrams??

- #9

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we know everything about free body diagrams...:)

marlon

marlon

- #10

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[tex] \Leftarrow F_f, F_n [/tex]

How do you put mroe than one letter in a subscript?

- #11

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well for the question first asked, i got a friction of 0.644N. So for the FBD would there be an arrow going left being the 0.644N and one right. The one right labeled something like F less then 0.644N since it is coming to a stop. It also says to neglect gravity so im not worry about that.

- #12

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Whozum, just use the {} signs like this

[tex]a_{mama mia 2}[/tex]

marlon

[tex]a_{mama mia 2}[/tex]

marlon

- #13

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[tex] \Rightarrow V_0 [/tex]

[tex] \Leftarrow F_{friction}, F_{net} [/tex]

You may not even need the [tex] F_{net} [/tex]

There is only one force acting, the force of friction, and it is directed to the left, opposite the direction of motion. There is nothing pushing the ball to the right.

- #14

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- #15

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vo is the initial velocity

marlon

marlon

- #16

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alright, thanx for all your help marlon and whozum!!!

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