Want this question answered?
30
They convert distance into force. So putting a pulley on a load would result in you having to haul up twice as much rope, but lifting about half of the weight of the load. Multiple pulleys increase rope length and further decrease force required to move the load.
pulleys are used in everyday life in many different situations and mechanisms. This is understandable because pulleys when used and set up correctly can lift or move a weight that is much greater than the force exerted upon the pulley. they are used in crane systems.
50 kg (on Earth) weighs about 110 pounds. If you're using a simple, singlepulley with a rope passing over it, then that's the pull you need on the rope tolift the bundle of shingles. If you're using a block and tackle arrangement ofmultiple pulleys, then you'll get away with much less pulling force on the rope,but you'll have to pull the rope much farther.
It makes work easier, because its less work, the more pulleys, the easier
30
Increasing the number of pulleys divides the force required to lift up a heavy object; increasing the number of pulleys decreases the force needed by the person (or motor) pulling the first end of the pulley system. However, it is important to know that it does not affect the total work needed to lift up the object. As the force is decreased, the distance of rope needed increases to compensate for a conserved amount of work required for the load to be lifted.
They convert distance into force. So putting a pulley on a load would result in you having to haul up twice as much rope, but lifting about half of the weight of the load. Multiple pulleys increase rope length and further decrease force required to move the load.
pulleys are used in everyday life in many different situations and mechanisms. This is understandable because pulleys when used and set up correctly can lift or move a weight that is much greater than the force exerted upon the pulley. they are used in crane systems.
50 kg (on Earth) weighs about 110 pounds. If you're using a simple, singlepulley with a rope passing over it, then that's the pull you need on the rope tolift the bundle of shingles. If you're using a block and tackle arrangement ofmultiple pulleys, then you'll get away with much less pulling force on the rope,but you'll have to pull the rope much farther.
Exerting force in a porportional manner, not using too much or too little force.
It makes work easier, because its less work, the more pulleys, the easier
The same force as the weight of the helicopter and its crew and cargo.
A ramp exerts no force, just gravity.
It depends on the size of the load and your strength. Archimedes pull a trimaran up onto the shore all by himself using a system of twenty pulleys.
Friction is the force that slows objects down. Especially when combined with another force, such as gravity. When you have low friction, such as on ice, you slow down much slower than when you have high friction, such as on a road.
Because there is an equal and opposite force pulling you down: gravity.