## maz123 3 years ago PLEASE someone help me with this one question!!!!!!!???? :(---->:)

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1. maz123

2. Mertsj

f = [ (u)(m)(g) ] / [ cos(x) - (u)*sin(x) ]

3. Mertsj

Given : Angle ( θ ) = 21o Mass ( m ) = 23 kg Static friction μs = 0.56 g = 9.8 m/s2 μs = F /N F = μs N where N = m g(cosθ + µ sinθ) F = μs mg(cosθ + µ sinθ) =------ N

4. Mertsj

That is a similar problem I found. Put in your data and see if it works.

5. maz123

even though it says kinetic friction and not static friction?

6. Mertsj

I don't know. Try it and see. Why don't you google the problem. You could probably find the exact problem.

7. maz123

well vice versa

8. maz123

i did! and each time i try different ways and i get different answers from all the different ways. ive tried 4 times only have 3 chances left :/

9. NoelGreco

First, it should read "19 deg ABOVE the horizontal."

10. NoelGreco

Can you calculate the force of kinetic friction, and tell in which direction the force of friction is applied?