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Lorenza Eichmann
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What is the efficiency of the pulley system in percent?
The efficiency of a pulley system depends on how it is set up. Be specific.
What is the mechanical efficiency of a pulley?
i dont know the correct answer
Can any pulley have a efficiency over 100?
No. A perfectly frictionless machine could have an efficiency of 100%. Anything less perfect must have can efficiency less than 100%.
What is the efficiency of the pulley system?
If the pulley is frictionless the angle does not matter, the tension in the rope will be the same on both sides of the pulley. If there is friction in the pulley however then you want to reduce the friction as much as possible. You do that by creating as large an angle between the two ropes as possible.
Why can't a pulley have a mechanical advantage greater than 1?
The mechanical advantage of a pulley can be greater than 1.The efficiency cannot but that is a different matter.
Rosa has designed a pulley system for a school science project She has determined that as the coefficient of friction increases the efficiency of the pulley decreases With a coefficient of friction?
50*
How does increasing the number of pulleys affect the ideal mechanical advantage and efficiency of pulley system?
Ideal mechanical advantage is the mechanical advantage when the efficiency of the pullefy system is 100%. It is a constant for that system of pulleys. Therfore it is not affected by increasing or decreasing the load.The MA of a pulley is equal to the number of supporting ropes.If the load is supported by one rope , the M.A of the system is 1. Efficiency is 1 for ideal pulley ( No loss of energy due to friction)If the load is supported by two ropes , the M.A of the system is 2. But Efficiency is still 1 for ideal pulley ( No loss of energy due to friction)If the load is supported by three ropes , the M.A of the system is 3. Efficiency is still 1 for ideal pulley ( No loss of energy due to friction) .And so on.Read more: How_does_increasing_the_load_affect_the_ideal_mechanical_advantages_and_efficiency_of_a_pulley_system
What is the efficiency of a pulley that requires a worker to do 250 j of work to lift an object that requires 170 j or work?
Efficiency = Wout/Win * 100%Efficiency = 170 J/250 J * 100% = 68%
What is the efficiency of a pulley with two vertical strands if it requires you to exert 440N of force to lift a 175lb box up 3m?
88.6% efficiency using 3 sig figs
What force could increase the resistance of all the PULLEYS?
Any force that will not allow the pulley to operate to peak efficiency
How does an increase in the load force affect the efficiency of a pulley system?
it might be to heavy for the wheel to handle and it break as the rope
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?
ME=work output/ work input x 100%ME=42/50(100)ME=84
