ASVAB · Simple Machines (Levers, Pulleys, Gears)

How does an inclined plane (ramp) make lifting a heavy object easier?

Correct answer

It reduces the force needed by spreading the work over a longer distance

  1. A It reduces the object's weight
  2. B It reduces the force needed by spreading the work over a longer distance
  3. C It removes gravity
  4. D It makes the object lighter permanently

Why this is the answer

An inclined plane (ramp) makes raising a heavy object easier by reducing the force needed to move it — but over a longer distance. Instead of lifting the full weight straight up, you push it up the gentler slope with less force, though you must move it farther. The total work (force × distance) is about the same (ignoring friction), but the reduced force is easier to apply. This is the mechanical advantage of a ramp: a longer, gentler ramp requires less force than a short, steep one. The inclined plane is one of the basic simple machines that trade force for distance.
Source: ASVAB MC, Inclined Plane