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A single pulley only changes the direction of the applied force. A second or more pulleys on the same rope will multiply the force applied by decreasing the distance of the applied force. This arrangement is called a block and tackle. Two pulleys double the force and halve the distance the force acts upon the mass. Three will triple the force while reducing the distance by 1/3, and so on.

If 1 pound of force is applied to a rope with four pulleys on it over the distance of 10 feet of rope it will raise a 4 pound weight 2 1/2 feet.

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10y ago

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Related Questions

What kind of pulley changes the direction of the input force but does not change the amount of the force you apply?

They pulley is applied by the output force and then it is being added on by the input work.


What kind of pulley changes the direction of input force but does not change amount of force you apply?

A single pulley alters the direction of the input but confers no mechanical advantage.


What is a movable pulley the input force?

A movable pulley can change the direction of the input force. When a force is applied downwards on one end of the rope, it causes the pulley to move upwards, lifting the load attached to the other end of the rope.


What is the output force of a movable pulley?

Depends what the input force is and the mechanical advantage of the pulley system If effort force (input force) is 20 pounds in a 6 pulley system (3 fixed,3 movable) then load force (output force) is 120 pounds As 6 times 20 equals 120 pounds


Does a pulley system cause the direction of the output force to be opposite to the direction of the input force?

A pulley system may cause the direction of the output force to differ from that of the input force, but is not guaranteed to do so. In a simple example, a double pulley could easily result in input and output forces in parallel.


What is the input force and output force of a pulley?

The input force is the force applied to the pulley by the person or machine. The output force is the force exerted by the pulley to move the load. The output force is typically higher than the input force due to mechanical advantage.


How does a moveable pulley change the input force?

A moveable pulley reduces the amount of input force needed to lift an object. By attaching the pulley to the object being lifted, the force needed to move the object is distributed between the pulling force and the weight of the object itself, making it easier to lift.


What type of pulley changes the direction of the input force but does not change the amount of force you apply?

A fixed pulley changes the direction of the input force without changing the amount of force applied. It is attached to a fixed point and does not move, simply redirecting the force in a different direction.


Find the output force exerted by a moveable pulley if the input force is 50 N?

The output force exerted by a movable pulley is equal to the input force applied. Therefore, if the input force is 50 N, the output force exerted by the movable pulley will also be 50 N.


Do the moveable pulley decreases the input force?

Do the moveable pulley decreases the input force?


What is a device that can multiply and change the direction of an input force?

A simple machine like a pulley can multiply and change the direction of an input force. By using multiple pulleys in a system, you can create a mechanical advantage that amplifies the force applied.


A pulley system always causes the direction of the output force to be the opposite of the input force true or false?

False. A pulley system can change the direction of the force applied, but it does not always result in the output force being in the opposite direction of the input force. The direction of the output force depends on the configuration of the pulleys in the system.