- #1
green-beans
- 36
- 0
Homework Statement
A steamer starts from rest, the engine exerting a constant propelling force Mf, where M is the mass of the steamer. The resistance of the steamer is assumed to vary as the square of the speed. Show that the distance x traveled in time t is:
x = (V^2 /f) ln cosh (f*t/V ) where V is the full speed of the steamer.
Homework Equations
The Attempt at a Solution
I am not sure whether I understood what is happening in this system correctly but I got the following equation:
Mf - v2M = Ma
f - v2 = a
Then, I tried solving it to find x(v) and I obtained:
x = 1/2 ln({f}/{f-V2})
I got a similar expression for v(t):
t = arcsin (V/√f)
But then I am not sure how one an obtain an expression with all three variables in it (i.e. x, V and t)
Thank you in advance!