a pulley system ( a rope swung over a wheel that's secured at celing height usually. One end of the rope is you pulling and the other end is tied to what you are trying to lift.
or
a lever (as in give me a lever and I'll move the world)
A lever
A marshmallow catapult is a type of lever, which is a simple machine that helps to lift or move objects with less force. The lever in the catapult allows for the marshmallow to be launched by applying a force on one end.
lever
A fulcrum.
The lever.
Simple machine help us do work like lifting heavy things that we cant lift. This was done by an 8th grader at berea middle school.
A wedge is a simple machine made out of two inclined planes put together. It is used to split things apart or lift heavy objects when pushed under them.
A wedge is a simple machine with a sloping surface that helps separate objects, lift heavy objects, or hold things in place. It works by converting a downward force into a horizontal force. Examples of wedges include knives, axes, and doorstops.
A lever can lift objects and a wedge can hold a door open
A wheelbarrow uses a lever as a simple machine to lift a load. The handle of the wheelbarrow acts as the lever, allowing the user to exert a force to lift the load placed in the container.
A pulley is a simple machine that changes the direction of force to lift an object. By looping a rope over a pulley, you can pull down to lift the object up.
A simple machine that helps move things is a lever. A lever consists of a rigid bar that pivots around a fixed point called the fulcrum. By applying force to one end of the lever, it can lift or move a load on the other end, making it easier to perform tasks such as lifting heavy objects. Other examples of simple machines that assist in movement include pulleys and inclined planes.