Hello all, I'm new to the forum here and desperately need some help in some basic physics concepts that I need to have a firm grasp on for the MCAT. My question is about PE on an inclined plane. For example, there are 3 possible scenarios (the height and mass remains the same for each scenario). Scenario 1 has a ramp angled at 30, scenario 2 has a ramp angled at 60, and the last scenario has no ramp at all- the person must lift it from the ground to the desired height. What I am asking is that when PE (or U)= mgh, does g remain the same at 9.8m/s^2 or is it affected by the angle of the ramp, ie gsin30? And could you please explain why? I know when you solve for acceleration in an unrelated problem to PE you do, but I'm not sure about for just when solving for PE. Thanks!