0
What else can I help you with?
What is the trade off of a pulley?
A pulley can trade off distance for force. By increasing the number of pulleys in a system, you can reduce the amount of force needed to lift an object in exchange for a longer distance over which the force must be applied.
How much force must be used to pull down 100 lbs by a rope using 3 pulleys?
To pull down 100 lbs using 3 pulleys, the force required would be one-third of the weight being lifted, so 33.33 lbs. This force is distributed across the three pulleys, with each pulley supporting roughly one-third of the load.
What force must a ski lift resist?
A ski lift must resist the force of gravity acting on the weight of the skiers and the chair itself. Additionally, the lift must also resist any forces due to wind or other environmental conditions that could affect the stability of the lift.
What must increase as the input force decreases for a pulley?
As the input force decreases for a pulley, the mechanical advantage must increase to compensate. This means that the pulley system must be designed to provide a larger output force relative to the input force in order to lift or move the load. Increasing the number of pulleys or using a pulley system with a higher mechanical advantage can achieve this.
What kind of force does a porter apply to lift an object?
A porter applies an upward force called the lifting force to lift an object. This force must be larger than the weight of the object to overcome gravity and lift it.
What is the trade off of a pulley?
A pulley can trade off distance for force. By increasing the number of pulleys in a system, you can reduce the amount of force needed to lift an object in exchange for a longer distance over which the force must be applied.
Why must you exert five times as much force to lift a mass of 5 kg as you must to lift a mass of 1 kg?
Because it's five times heavier of course !
How much force must be used to pull down 100 lbs by a rope using 3 pulleys?
To pull down 100 lbs using 3 pulleys, the force required would be one-third of the weight being lifted, so 33.33 lbs. This force is distributed across the three pulleys, with each pulley supporting roughly one-third of the load.
What force must a ski lift resist?
A ski lift must resist the force of gravity acting on the weight of the skiers and the chair itself. Additionally, the lift must also resist any forces due to wind or other environmental conditions that could affect the stability of the lift.
What must increase as the input force decreases for a pulley?
As the input force decreases for a pulley, the mechanical advantage must increase to compensate. This means that the pulley system must be designed to provide a larger output force relative to the input force in order to lift or move the load. Increasing the number of pulleys or using a pulley system with a higher mechanical advantage can achieve this.
What kind of force does a porter apply to lift an object?
A porter applies an upward force called the lifting force to lift an object. This force must be larger than the weight of the object to overcome gravity and lift it.
Do pulleys generate some of the force for you?
No. Conservation of energy shows that any system can only deliver as much energy as is put in. In reality, all systems are less than 100% efficient, so any practical system will waste some (or much) of its input energy. But a pulley system can *multiply* force. Take a setup with a one-sheaf (wheel) pulley at one end, and a one-sheaf pulley at the other. Correctly strung, you will find that pulling two feet of rope will lift a load only one foot. If it were perfectly frictionless, you could draw on the rope with a 50-pound pull and lift a 100-pound load. It may seem that you've done magic with the rope - it's lifting 100 pounds, so how strong must it be? The answer is that there are two sections of rope supporting the load between the sheaves, so each section only bears (100/2) = 50 pounds. This is why you'll often see cranes with multiple-sheaf pulleys - the winding gear must wind *a lot* of steel rope to life or lower the load, but the rope can be much thinner than if a single rope was used.
The amount of force that you must use on an object to lift it is?
Any force greater than its weight.
What is the benefit of a fixed pulley?
a fixed pulley changes the direction you are executing the force in. fixed pulleys are made to work with gravity which makes the work you must use less than if you were lifting straight up and against gravity.
If a square weighs 100 pounds how much Force must be used to pull down the rope to lift the weight?
To lift the 100-pound square weight, a force equal to or greater than 100 pounds must be exerted on the rope. This force needs to overcome the weight of the object and any friction or resistance present in the system.
How does a pulley make work easier?
1) it doesn't. Work = force x distance. So a pulley that reduces force will also increase distance -but -it can reduce the force needed to move somethingthus making life easier.Answer:It depends on the number of pulleys and their arrangement. A single pulley does not change the force required to lift something. But, other pulley arrangements do. Four pulleys can be arranged into a thing called a block & tackle that can divide the force required to lift something by four. But, the rope must be extended four times as long to do this.
Is the force of a ski lift a push a pull or a pull of gravity?
The uphill journey is a pull; the motors must pull the weight uphill. The downhill journey while of course being influenced by the pull of gravity is simply not enough by itself to power the entire thing. There is no pushing involved.
