Hi there, i have been working with a problem the past few days and have a hard time with some of the assumptions being made.
The problem involves a piston in a tube which is connected to a vessel filled with air.
The air behaves as an ideal gas to which the product PV^ζ is a constant.
So if the vectors of F & Δs are opposite (180) then the result is negative when using ΔW = |F| |Δs| cos 180.
I think i was getting confused between the direction of motion vs the change in position vector.
Thank you for your help!
Hi all, i am trying to figure out if work done by gravity is positive or negative on an approaching meteor,
I have used W(1->2) = integral (1->2) F(gravity) dot dr. and got a result of (GMem/r2) - (GMem/r1).
Were G is gravity, Me is earth mass, m is meteor mass and r1, r2 are initial and...