A 20 N crate starting at rest slides down a rough 5m long raml ,inclined at 25° with the horizontal. 20 j of energt is lost to friction. What will be the speed of the crate at the bottom of the incline?
2 Answers
I found:
Explanation:
Have a look:
Gio already wrote something, but just to have an answer in MathJAX (:P), I'll write my approach too.
I would start with:
...while
(
All constants are positive in this context, so a negative either means down is negative or losing energy is negative. Since this ramp is
The weight is just the force due to gravity:
So overall: