- #1
goluigi2196
- 20
- 0
1. If the coefficient of kinetic friction between a 30 kg crate and the floor is 0.26, what horizontal force is required to move the crate at a steady speed across the floor?Fp is the pushing force.
2. Homework Equations
ΣFx=max
ΣFy=0
Ff=μkFn
solving for Fp I get...
Fp=max+Ff
Fp=max+Ff
Fp=30ax+Ff
ok..there aren't enough known components...
Ff=μkFn
Ff=μkmg
Ff=(0.26)(30)(9.8)
Ff=76.44
There's the friction variable . Plug that into the other equation...
Fp=30ax+76.44
I still have 2 variables missing. I need the acceleration. How do I find that?
2. Homework Equations
ΣFx=max
ΣFy=0
Ff=μkFn
solving for Fp I get...
Fp=max+Ff
The Attempt at a Solution
Fp=max+Ff
Fp=30ax+Ff
ok..there aren't enough known components...
Ff=μkFn
Ff=μkmg
Ff=(0.26)(30)(9.8)
Ff=76.44
There's the friction variable . Plug that into the other equation...
Fp=30ax+76.44
I still have 2 variables missing. I need the acceleration. How do I find that?