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As much as you want it to
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∙ 13y ago
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Does weight affect a pulley?
Yes, weight has a huge effect on a pulley system. The amount of weight being moved or lifted directly affects how well the pulley works, and too much weight can break it altogether. Weight is also the main leverage in a pulley system.
How much weight can a pulley lift?
100000 kg
How much weight can a pulley hold?
1 pound
How is a flagpole a pulley system?
When you pull up the flag you pull it up by the rope. The rope has a pulley on it. So the actual poll is not a pulley but it has a pulley system on it
How does the pulley make work easier?
You don"t have to pull the full weight. They reduce the force needed to move an object.
Does weight affect a pulley?
Yes, weight has a huge effect on a pulley system. The amount of weight being moved or lifted directly affects how well the pulley works, and too much weight can break it altogether. Weight is also the main leverage in a pulley system.
How much weight can a pulley lift?
100000 kg
How much weight can a pulley hold?
1 pound
How is a flagpole a pulley system?
When you pull up the flag you pull it up by the rope. The rope has a pulley on it. So the actual poll is not a pulley but it has a pulley system on it
How does the pulley make work easier?
You don"t have to pull the full weight. They reduce the force needed to move an object.
A movable pulley can?
It can pull something that may be very heavy too.This is the benefit of a pulley that it can pull heavy things because it has pulley that increases the amount t=of the pull or force that is being applied.
What is a fixed pulley used for?
In a simple case of lifting a weight using a pulley, there are two ways to do it and two different results. First, attach a pulley to the ceiling, and a rope to the weight which is on the floor. Run the rope through the pulley. Now we simply pull down on the rope and the weight is lifted up. In the second case, we attach one end of the rope to the ceiling, the pulley to the weight, and pass the unattached end of the rope through the pulley. Now we have to pull the rope up, and the weight is lifted. Now let's look at each job and what happens. In the first case, pull the rope tight without lifting and hold the rope at the top, next to the pulley. If you now pull the rope all the way down to the floor, the weight goes all the way up to the ceiling. Note also that the tension in the rope is equal to the weight being lifted and that there is only one tensioned rope pulling the weight upwards. Passing over the pulley changes the direction of the tension in the rope but doesn't change it's pulling power. Pulling that rope from ceiling to floor is exactly the same as lifting the weight from floor to ceiling. In the second case, tighten the rope before lifting and hold the rope where it exits the pulley on the weight. Now pull and your hand moves from there to the ceiling - about the same distance (but the other way) as you moved your hand in the other case. However, notice now that the weight is only half way to the ceiling. It is hanging on a loop of rope, one side going to the hook and the other going to your hand. This suggests that the weight is shared by these two parts of the rope and therefore the tension in each piece only needs to be half the weight. Your hand is holding half the weight. The ceiling hook is still holding the other half. To finish the job, you will have to keep pulling more rope - all the rope which is still there from hook to weight pulley and back to your hand. That's the floor to ceiling distance. In the second case, you pull twice as much rope to finish the job. And because it takes twice as long, it only needs half the force at any stage.
How much weight can a reindeer pull?
Depending on the age, a bull can approx. pull twice its own weight!
How much effort is exerted if the weight is 400 grams and the pulley used is a movable pulley?
The answer will depend on the distance that the 400 grams has to be moved.
What does a a pulley change?
In a simple case of lifting a weight using a pulley, there are two ways to do it and two different results. First, attach a pulley to the ceiling, and a rope to the weight which is on the floor. Run the rope through the pulley. Now we simply pull down on the rope and the weight is lifted up. In the second case, we attach one end of the rope to the ceiling, the pulley to the weight, and pass the unattached end of the rope through the pulley. Now we have to pull the rope up, and the weight is lifted. Now let's look at each job and what happens. In the first case, pull the rope tight without lifting and hold the rope at the top, next to the pulley. If you now pull the rope all the way down to the floor, the weight goes all the way up to the ceiling. Note also that the tension in the rope is equal to the weight being lifted and that there is only one tensioned rope pulling the weight upwards. Passing over the pulley changes the direction of the tension in the rope but doesn't change it's pulling power. Pulling that rope from ceiling to floor is exactly the same as lifting the weight from floor to ceiling. In the second case, tighten the rope before lifting and hold the rope where it exits the pulley on the weight. Now pull and your hand moves from there to the ceiling - about the same distance (but the other way) as you moved your hand in the other case. However, notice now that the weight is only half way to the ceiling. It is hanging on a loop of rope, one side going to the hook and the other going to your hand. This suggests that the weight is shared by these two parts of the rope and therefore the tension in each piece only needs to be half the weight. Your hand is holding half the weight. The ceiling hook is still holding the other half. To finish the job, you will have to keep pulling more rope - all the rope which is still there from hook to weight pulley and back to your hand. That's the floor to ceiling distance. In the second case, you pull twice as much rope to finish the job. And because it takes twice as long, it only needs half the force at any stage.
How much can a pitbull pull?
How much a pitbull can pull will vary greatly depending on his or her size and weight and conditioning. On average, a dog can easily pull 3 times his or her weight on wheels.
Which pulley system can make work easier?
A pulley halves the force required to lift a load, but doubles the length of rope or cable. So if you had a 10lb. weight attached to a rope, and were pulling the rope upward, you would need 10lbs. of force to lift it. However, if you had a pulley attached to a beam overhead, and were pulling down on the rope, you would only need 5lbs. of force to move the weight, but you would need to pull twice as much rope to get the weight to move the same distance.
