- #1
eatingblaa
- 21
- 0
1. The drawing shows a 27.4-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, and , are applied to the crate, and it begins to move. The coefficient of kinetic friction between the crate and the floor is k = 0.313. Determine the (a) magnitude and (b) direction (relative to the x axis) of the acceleration of the crate.
2. f=ma
Fk=UkFn
Fn=ma
3. I found the overall force to be 126.9 N 34.6 degrees to the x-axis (the angle is verified to be correct)
I then found the kinetic friction to be 8.41N
Because they do not specify the static coffecient i think we leave that out.
total force - kinetic friction
126.9 - 8.41 =118.49
using f=ma
I found acceleration to be 4.32 ms-2
this is wrong I was wondeirng if anyone could tell me what i did wrong
2. f=ma
Fk=UkFn
Fn=ma
3. I found the overall force to be 126.9 N 34.6 degrees to the x-axis (the angle is verified to be correct)
I then found the kinetic friction to be 8.41N
Because they do not specify the static coffecient i think we leave that out.
total force - kinetic friction
126.9 - 8.41 =118.49
using f=ma
I found acceleration to be 4.32 ms-2
this is wrong I was wondeirng if anyone could tell me what i did wrong