Homework Statement
An airplane is flying at an elevation of 12500 m. The window on an airplane is a square of length 0.115 m on each side. What is the net force on the window?
Homework Equations
P = Po + pgh
p = 1.26 kg/m^3
Pair = 101.3 kPa
The Attempt at a Solution
I thought...
Hi, I'm having trouble understanding this concept. A refrigerator is on a ramp of length d and it is being pushed up the ramp. What is the work done by the gravitational force? In the book it says mgdcos180 which is -mgd. I thought that the horizontal component of gravity was mgsin(theta) so...