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Homework Statement
I know incline is 16 degrees
I know distance traveled is 2.85 meters
I know Vf is 2.71 meters/second
I calculated the meu static and got .287
Homework Equations
The Attempt at a Solution
Tried every thing so lost
Welcome to the PF.Homework Statement
I know incline is 16 degrees
I know distance traveled is 2.85 meters
I know Vf is 2.71 meters/second
I calculated the meu static and got .287
Homework Equations
The Attempt at a Solution
Tried every thing so lost
Give it a try anyway. Sometimes (when the net force is proportional to the mass) you don't need to know the mass. For example, if I drop my computer right now, even though I have no idea what it's mass is, I can tell you it accelerates at 9.8 m/s/sBut with no mass...I have two variables.
A flatbed truck slowly tilts its bed upwards to dispose of a crate. When the tilt angle is 16 degrees or above the create begins to slide. When the create reaches the bottom of the flatbed, it has slide 2.85 meters, its speed is 2.71 m/s.
I found meu static by summing the forces in both the x and y direction which all and all gave me the formula of meu static = tan of the angle. Tan(16)=.287 now I'm stuck on how to calculate meu kinetic because you need acceleration. But with no mass...I have two variables. I'm just very confused.
Draw a free body diagram (FBD) for the crate sliding down the ramp. Show the component forces due to gravity and due to the sliding friction. Then use F=ma and sum the forces... Please show that work...But in the formula I reach...the masses just can't cancel? I'm sorry, I'm not quite understanding. I get your analogy, but still confused on how it pertains to a frictional problem.
Have you actually tried it, or are you just guessing?But in the formula I reach...the masses just can't cancel?
The analogy was not really supposed to give you any insight; the point of my post was to just try finding μ_{k} and see what happens!I get your analogy, but still confused on how it pertains to a frictional problem.
What happens if you divide both sides by m?meu k(mgcos(theta))-(mgsin(theta))=ma but I have two variables.
Double check your algebra. If you get the same answer show your steps.μk=a/g(cos(theta))-(sin(theta)) ???
Your algebra is still wrong. Triple check itμk=a/(gsintheta)-(gcostheta)
As long as you don't bite we're okay.grrrrrrrrrr. sorry for growling.