it deacreases the input force
The pulley makes work of lifting easier then lifting by hand.
do levers make doing work easier
Pulleys make lifting things easier. example: If you want to lift 100kg you don't want to lift it with your hands, so you use a pulley. The best choice would be to use a pulley with 4 wheels. Using this would make the effort to lift the 100kg about 75% easier. So lifting the 100 kg with a pulley would make the object be about 25 kg. That is why pulleys are important.
The purpose of a simple machine is to facilitate or make whatever job you are doing easier. For Ex. A stapler uses a lever. Which is easier forcing a staple with your fingers or just pushing a piece of plastic.
A fixed pulley does not make the force applied easier, it changes the direction of this force. For example, instead of bending over and lifting and object, a fixed pulley lets you lift it by pulling down on a rope.
Archimedes invent the compound pulley around 250 BC. The invention was to utilize leverage to make moving a heavy object easier.
A fixed pulley is typically used to change the direction of an applied force. It can make it easier to lift heavy objects by allowing you to pull down on the rope instead of lifting the object directly.
A pulley can make your life easier by allowing you to lift heavy objects with less effort. By utilizing the mechanical advantage provided by a pulley system, you can distribute the weight of the load across multiple ropes and pulleys, reducing the amount of force required to lift the object. This can make tasks like lifting furniture, hoisting equipment, or raising sails much more manageable.
I would like to be able to make doing homework easier!
The pulley was invented around 1500 BCE in Mesopotamia. It was used to make lifting heavy objects easier by distributing the weight and allowing for more control.
A pulley reduces the amount of force needed to lift something by distributing the load across multiple ropes or cables. This allows you to pull down on the rope with less effort, making it easier to lift a heavy object.
hung up by a string in a jar of formaldehyde – fixes the tissue, preserving it from decay and firming it to make it easier to handle.