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A single pulley is one of the "simple machines" in physics, and makes work seem easier by redirecting the action required to work along with gravity. For example, you can lift something by by pulling down on a rope.Multiple pulleys make work even easier, but you need to do more of it: running a rope through six pulleys will make the load seem 1/6 as heavy, but you'll have to pull the rope six times as far.A handy guide to the simple machines is here.
A pulley helps us work by lifting large load that we could not do by ourselves.
What else can I help you with?
When was the pulley invented?
The block and tackle (or pulley system) was brought to us by Archimedes (287BC - 212BC) in Greece, but neither Archimedes, nor any who wrote about him and his extraordinary work dated the invention.stupid answer
Type of pulley that has additional numbers of ropes that help to increase mechanical advantage?
Fixed Pulley!!
How do machines help us to do work?
makes life easier on us
How machines help us do work?
They help us by doing things that we can't do and make easier the things that we can do.
How does a well pulley work?
It works much more effectively, and with greater dedication, focus, and commitment, than an ailing pulley does.
Which simple machine can help us to move a sail on a sailboat?
pulley
What is the formula for the percent efficiency of a pulley?
The formula for the percent efficiency of a pulley is (output work/input work) x 100%. It compares the output work (work done by the pulley) to the input work (work done on the pulley) to determine how efficient the pulley system is in transferring energy.
Do you need a pulley to remove bracket tensioner?
I think you mean "puller" not pulley and give us more info like the year, make, model and engine size to help us answer that one.
How does a pulley help us in life?
A pulley helps us by making it easier to lift heavy objects by distributing the weight across multiple ropes. It allows us to use less force to move or lift objects, making tasks more efficient and reducing the risk of injury. Pulleys are commonly used in various applications such as construction, transportation, and fitness equipment.
When was the pulley invented?
The block and tackle (or pulley system) was brought to us by Archimedes (287BC - 212BC) in Greece, but neither Archimedes, nor any who wrote about him and his extraordinary work dated the invention.stupid answer
What is the function of pulley?
Pulley reduces the force given to get the work done. There are amny types of pulleys. Examples are fixed pulley, movable pulley and Combined pulley.
A person does 50j of work to lift a crate using a pulley. the pulley's work output is 42j. What is the pully's mechanical efficiency?
The mechanical efficiency of the pulley is calculated as: (Work output / Work input) * 100%. In this case, it would be (42J / 50J) * 100% = 84%. The pulley is 84% efficient at converting input work into output work.
How is a pulley and a lever alike?
A pulley and a lever are both simple machines that help to make work easier by changing the direction or magnitude of a force. They both utilize the principle of mechanical advantage to multiply force or distance.
Type of pulley that has additional numbers of ropes that help to increase mechanical advantage?
Fixed Pulley!!
How does the work you get out of a pulley compare with the work you put into it?
The WORK is the same. Work = force times distance. If the pulley allows you to pull half as hard, you will have to pull over twice the distance (length of rope), making the same total work. (Ignoring friction; you would actually have to do slightly more work to overcome the friction in the pulley.)
How pulley help?
can change a direction of a force
Is a wheel and pulley a simple machine?
Yes, both a wheel and a pulley are considered simple machines. They help to make work easier by changing the direction or magnitude of a force applied. The wheel reduces friction by rolling, while the pulley helps to lift heavy objects by providing a mechanical advantage.
