You would probably use either an inclined plane or a pulley system.
An inclined plane is basically a ramp, so it would make it easier to push up to the top of a building. However, you'd need a REALLY big ramp for that, so you'd probably use a pulley: while you'd have to pull a lot of rope, it would let you lift a heavy object really easily.
pulley
A pulley.
lever
A Inclined Plane Can Help You Raise A Load Or A Pulley System.
pulley
a machine can heple us travel
Not Certain: but Pulleys seem to fit the bill.
Pulley-a simple machine that uses grooved wheels and a rope to raise, lower, or move a load.Lever- a stiff bar that rests on a support called a fulcrum which lifts or moves loads.
450N
It reduces the force necessary to raise a given weight a given distance. The reduction is related to the sine of the angle of inclination of the slope.
jack - used to raise a car wheel off the ground to change a tire. Considered a lever
It is a rope fitted around the rim of a fixed wheel. Some pulleys increase the force that is applied to them .Other change the direction of the force.They are used to raise and lower things such as elevator cars.It is just that - a pulley.