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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?
Wiki User
∙ 12y ago
88.6% efficiency using 3 sig figs
Wiki User
∙ 12y ago
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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 the pulley system in percent?
The efficiency of a pulley system depends on how it is set up. Be specific.
How does pulleys work?
Pulleys can multiply the force you apply. Example: I pull down on a pulley with TWO Pulleys THREE supporting Strands and the force is Multiplied by a factor of TWO, but you have to pull TWICE the length of Rope as the Distance the Object is Raised. Therefore you can LIFT more WEIGHT than you normally could.The relationship of Supporting Strands to the Force Multiplier is:(the number of Supporting Strands) - 1So a Pulley system with 5 Supporting Strands with Multiply YOUR input Force by 4 times. This type of System is referred to as "Block and Tackle".
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 force could increase the resistance of all the PULLEYS?
Any force that will not allow the pulley to operate to peak efficiency
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 the pulley system in percent?
The efficiency of a pulley system depends on how it is set up. Be specific.
Does a fixed pulley have two supporting strands?
A fixed pulley can have any odd number of strands supporting the load.The strand that you pull on doesn't support the load.
The IMA of a pulley can be found by counting the strands supporting the?
resistance
What is the efficiency of a pulley?
i dont know the correct answer
What is the mechanical efficiency of a pulley?
i dont know the correct answer
How do you get power steering pulley off 1995 suburban?
That requires a special PULLER to remove the pulley.
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%.
How do you remove the power steering pulley on a 355 Chevy?
That requires the use of a power steering pulley PULLER. ( A special tool ) The pulley is pressed on.
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*
