The simple machines - a lever for example - are usually designed so that you need less force. In compensation, you need to move the lever for a greater distance. This follows directly from the law of conservation of energy.
You can move a large load using a relatively small effort. http://www.deyes.sefton.sch.uk/technology/AS&Alevel/mechanical_systems.htm
the effort is decreased
Do you mean technological development? Then the answer is no. All complex machines are made up of simple machines in various combinations. Without the one, you can't have the other. The world would go on, of course, but the technological complexities of its modern civilizations could not exist without simple machines.
A complex machine is a machine using more than one simple machine for its operation. A bicycle is a complex machine, using a lever for steering (handlebars), wheel and axle, inclined plane (the threads on bolts), and a pulley (chain on sprockets).
Simple machines are considered simple because they usually only have one part or need one force to work.
Simple machines lets you trade force for distance, or the other way around. Or they change the direction of a force.
When using a simple machine, the force you must overcome is usually the resistance force, which is the load or weight you are trying to move. Simple machines, such as levers, pulleys, and inclined planes, are designed to multiply the effort force applied, making it easier to lift or move heavy objects. By increasing the mechanical advantage, these machines allow you to exert less effort while still overcoming the resistance force.
Simple machines make it easier to perform work by multiplying or changing the direction of force. They allow us to exert less effort to achieve the same result, making tasks more manageable. Examples of simple machines include levers, pulleys, and inclined planes.
the safety precaution in using simple machines is to use it in a safety hand
You can move a large load using a relatively small effort. http://www.deyes.sefton.sch.uk/technology/AS&Alevel/mechanical_systems.htm
by using simple machines
Simple machines are tools that help us make work easier by changing the direction or magnitude of a force. They include levers, pulleys, inclined planes, wedges, screws, and wheels and axles. By using simple machines, we can lift heavy objects, move loads with less effort, and perform tasks more efficiently. They are fundamental in various applications, from construction to everyday household tasks.
The tradeoff of simple machines lies in their ability to amplify force or speed while sacrificing other factors such as distance or control. For example, using a lever can increase the force applied to lift a heavy object, but it may require moving the lever over a greater distance. This means that while simple machines can make tasks easier, they often involve a compromise between the amount of effort exerted and the distance over which that effort is applied. Ultimately, the choice of machine depends on the specific needs of the task at hand.
We use simple machines like the lever to make work easier by allowing us to multiply or change the direction of the force applied. Levers help us lift heavy loads with less effort by using a fulcrum to pivot and redistribute the force. Simple machines like the lever are fundamental tools that have been used for centuries to accomplish a variety of tasks with efficiency.
the effort is decreased
people have been using it forever
Simple machines are mechanisms that require only one input force to accomplish specific tasks, such as lifting or moving objects. By using simple machines, individuals can apply less force over a greater distance to achieve the same amount of work. In essence, these devices reduce the amount of effort needed to perform tasks, making work more manageable and efficient.