- #1

- 17

- 0

N=mg=(32)(9.81)= 313.92 * coefficaint of mew sub s=.57=178.9

Ok, I think I did that right....only I'm not sure what to do with the 21° angle. I did 178.9cos(21)=167.0 but that's not right.

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- Thread starter Pencil
- Start date

- #1

- 17

- 0

N=mg=(32)(9.81)= 313.92 * coefficaint of mew sub s=.57=178.9

Ok, I think I did that right....only I'm not sure what to do with the 21° angle. I did 178.9cos(21)=167.0 but that's not right.

- #2

- 486

- 1

Because in this case, N does not equal mg.

- #3

- 17

- 0

Ny=N

Fky=0

Wy=-mgsin(21

Nx=0

Fkx=-mewk

Wx=0

I did Fk=mewkN=.57*(mgsin(21)=.57*112.5=64.12 I did somthing wrong...again...but I don't know what...

- #4

- 486

- 1

But yeah, that's the sort of chart I had in mind. :grin:

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