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How does a movable pulley make work easier?
A fixed pulley is the only pulley that when used individually, uses more effort than the load to lift the load from the ground. The fixed pulley when attached to an unmovable object e.g. a ceiling or wall, acts as a first class lever with the fulcrum being located at the axis but with a minor change, the bar becomes a rope. The advantage of the fixed pulley is that you do not have to pull or push the pulley up and down. The disadvantage is that you have to apply more effort than the load
When a system is doing work what happens to its temperature?
When a system is doing work, it can either increase or decrease in temperature depending on the type of work being done. If work is done on the system, its temperature may increase due to the input of energy. Conversely, if the system is doing work on its surroundings, it may lose energy and decrease in temperature.
How does a spring pulley system work?
A spring pulley system works by using a spring to provide tension on the pulley system. When a force is applied to the system, the spring stretches, storing potential energy. This potential energy is then released, helping to move the load connected to the pulley. The spring tension assists in lifting or lowering the load with less effort.
Can work done on a system decrease its thermal energy?
Yes. As an example: if you define a refrigerator as your system, the work done on the system causes heat to be expelled from the system to the surroundings. The net heat expelled will be equal to the work input plus the decrease in its thermal energy.
What does a pulley do for car?
The purpose of a pulley is that it can lift heavier things at a quicker pace. Some examples of a pulley is a ski lift and alot of roller coasters have them also. I hope i have helped at least a little bit!!! (:
Why do people need the pulley?
to increase and decrease the speeds gradully
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.
Does a pulley make work easier by changing the direction of force?
Yes, a pulley make work easier by changing the direction of the force needed to lift an object. It allows you to pull downward on the rope instead of lifting upwards, which can reduce the amount of effort required to lift the object.
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.
The cooler you have has a 14inch pully if you change it to a 12 inch pulley will it blow harder?
If you decrease the size of the driven pulley the fan will turn faster. You can achieve the same effect by increasing the size of the drive 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 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.)
When you straighten up your work space do you increase or decrease the entropy of your work space?
decrease
Can your car work with a malfunctioning idler pulley?
The Answer is no.
Do pulleys make you work less?
No. If you are, say, lifting a weight the amount of work done is the same whether you use a pulley or not. However, you may not be able to actually lift the weight unless you use a pulley. But the amount of work done will be the same with or without the pulley.
Which pulley setup would decrease the amount of effort force needed to life an objected?
A pulley system with more movable pulleys will decrease the effort force needed to lift an object. This is because the load is distributed among multiple strands of the rope, reducing the force required to lift the object.
Do the moveable pulley decreases the input force?
Do the moveable pulley decreases the input force?
