- #1
shizupple
- 20
- 0
1. The problem statement, all
variables and given/known data
A clerk moves a box of cans down an
aisle by pulling on a strap attached to
the box. The clerk pulls with a force
of 190.0 N at an angle of 28° with the
horizontal. The box has a mass of 37
kg, and the coefficient of kinetic
friction between the box and the floor
is 0.45. Find the acceleration of the
box.
Ff=U*Fn
I tried solving this three times. I
found x and y components:
X:167.8N
Y:89.2N
Tried to find the Fn:
cos(28)89.2= 78.8N
Ff=.45(78.8)
Ff=35.5N
Fa=190-35.5N= 154.6N
154.6N=37a
a=4.2N
I also tried subtracting the force
parallel by the force applied and got
the wrong acceleration also. Am I
finding the Force Normal wrong? Some
direction would be great thanks.
variables and given/known data
A clerk moves a box of cans down an
aisle by pulling on a strap attached to
the box. The clerk pulls with a force
of 190.0 N at an angle of 28° with the
horizontal. The box has a mass of 37
kg, and the coefficient of kinetic
friction between the box and the floor
is 0.45. Find the acceleration of the
box.
Homework Equations
Ff=U*Fn
The Attempt at a Solution
I tried solving this three times. I
found x and y components:
X:167.8N
Y:89.2N
Tried to find the Fn:
cos(28)89.2= 78.8N
Ff=.45(78.8)
Ff=35.5N
Fa=190-35.5N= 154.6N
154.6N=37a
a=4.2N
I also tried subtracting the force
parallel by the force applied and got
the wrong acceleration also. Am I
finding the Force Normal wrong? Some
direction would be great thanks.