0
A pulley system has an efficiency of 61.0 percent How much of the rope must be pulled in if a force of 682 N is needed to lift a 135 kg desk 2.16 m?
Wiki User
∙ 14y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
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 did the pulley affect the amount of force needed?
A pulley is a force multiplier. (it swaps force for distance).
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%
How a pulley is used to raise a flag?
Two snap hooks are fastened to the loop of lanyard that runs through the pulley. The flag is fastened to the lanyard with the hooks, and the lanyard is pulled through the pulley at the top to raise the flag.
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 efficiency of a pulley?
i dont know the correct answer
How do you dislodge a stuck idler pulley?
well I pulled and pulled and it snapped today
What is the mechanical efficiency of a pulley?
i dont know the correct answer
When you want to pull to lift something the main advantage of passing a rope upward and through a single pulley rather than just up over the branch of a tree is that the pulley?
The rope pulled over the branch is hampered by the rope's friction over the branch. The same rope pulled over a pulley is not affected by friction as the pulley wheel will turn as the rope is pulled.
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.
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*
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.
How do you remove the crank pulley on Mitsubishi 3.0 v-6?
remove all belts,tensioners etc, remove pulley bolt, use HARMONIC BALENCER PULLEY to remove - DO NOT USE NORMAL PULLEY REMOVER - must be pulled from center of pulley not from outer edge
Anchor the rope at one end and arrange a movable pulley to achieve a mechanical advantage of 2 how much rope you pulled through the pulley?
2m
When can a pulley have kinetic energy?
It could have kinetic energy when the strings are being pulled and it is in operation
