- #1
jonc1258
- 5
- 0
Homework Statement
Find the final velocity of a 5g steel ball bearing being pulled by a neodymium magnet with a pull force of 6.1 pounds (27.1 Newtons) in a straight line on a frictionless surface after being pulled for .1 meters
Homework Equations
F=MA
The Attempt at a Solution
f=ma
27.1 = .05a
a = 542m/s^2
The bearing travels for .1 meters, which is 1.85E-4 as far as it will travel in the first second (if the above solution for acceleration is correct), so t must be 1.85E-4 seconds.
v = (.1 m)/(1.85E-4 s) = 542m/s
As you can probably see by how unrealistic the numbers I came up with are, I'm not sure what to do. Could you maybe think about this in terms of kinetic energy? I got to feeling that this problem is more complicated than I initially thought.