A heavy box can be lifted by the simple machine of a lever. Using a plank as the and rod (or similar) as the fulcrum, the box can be lifted, tilted and possibly flipped by applying force to one side of it.
A lever
The lever.
To safely lift a heavy box, bend your knees, keep your back straight, and lift with your legs. Hold the box close to your body and avoid twisting while lifting. Ask for help if the box is too heavy for you to lift alone.
Probably you are using the board as a lever.
A lever is used to lift heavy objects because it magnifies the input force applied to it. By using a lever, a person can apply a smaller force over a longer distance to lift a heavier load over a shorter distance. This principle allows for the efficient lifting of heavy objects with less effort.
A lever works by using a pivot point, or fulcrum, to help lift heavy objects with less force. When force is applied to one end of the lever, it creates a mechanical advantage that allows the object to be lifted with less effort. The longer the lever arm, the greater the force that can be exerted to lift the object.
A lever works by using a pivot point, or fulcrum, to help lift heavy objects with less force. When a force is applied to one end of the lever, it creates a mechanical advantage that allows the object to be lifted with less effort. The longer the lever arm, the greater the force that can be applied to lift the object.
A lever works by using a pivot point, or fulcrum, to increase the force applied to lift heavy objects. When force is applied to one end of the lever, it creates a mechanical advantage that allows for the object to be lifted with less effort.
The table was so heavy (having a lot of weight) , my uncle couldn't lift it. :(
Lever Hoist
It is true that a box is too heavy to lift when the weight exceeds your lifting capacity, potentially resulting in injury. It is important to avoid attempting to lift heavy objects alone and to seek help or use equipment like a dolly for heavy lifting tasks.
Using a ramp would make it easier to raise a heavy box onto a platform. By using a ramp, you can reduce the amount of force needed to lift the box straight up by spreading it out over a longer distance. This lever and fulcrum system allows you to gradually raise the box with less effort.