Inclination: Inclination refers to the angle between the ramp and the horizontal surface. Steeper ramps require more effort to push objects up.
Mechanical Advantage: Mechanical advantage measures how much easier or efficient a machine (like a ramp) makes our work. The longer and less steep the ramp, the greater its mechanical advantage.
Friction: Friction is the force that opposes motion when two surfaces are in contact with each other. When pushing an object up a ramp, friction can make it harder and increase the amount of work required.