An inclined plane (ramp) makes lifting a heavy object easier by:

An INCLINED PLANE (ramp) reduces the FORCE needed to raise an object by spreading the work over a greater DISTANCE. ASVAB Mechanical Comprehension tests simple machines. Instead of lifting straight up (high force, short distance), you push up the ramp (less force, longer distance) — the work (force × distance) is about the same, but the force is reduced. A LONGER, more gradual ramp requires less force than a short, steep one. This force-distance trade-off (mechanical advantage) applies to all simple machines and is commonly tested.