0
In a pulley system where is there likely to be friction that reduces the efficiency?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
When you want to pull downward 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 what is that the pulley?
Reduces friction
When you pull downward to lift the main advantage of passing a rope upward through a single pulley rather than just up over the branch of a tree is that the pulley?
Answer :- The pulley reduces friction.
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
Does a tire or pulley have more friction?
A tyre has more friction than a pulley.
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 do lubricants increase a machine's mechanical efficiency?
A pulley has a center axle around which it rotates. A rope passes over the pulley and is attached to the load. In an ideal pulley the work done in lifting the load is exactly the same as the energy expended. In a real pulley, because of the friction, we need to spend more energy in lifting the load. The additional energy is dissipated, i.e., wasted in the friction. Adding a lubricant to the shaft of the pulley reduces the friction and therefore increases the efficiency. A very thin layer of oil (lubricant) in between the moving and stationary parts can reduce friction very significantly.
When you want to pull downward to lift something the main advantage of passing a rope through a single pulley rather than just up over the branch of a tree is that the pulley reduces friction?
Reduces friction
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*
When you want to pull downward 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 what is that the pulley?
Reduces friction
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.
When you pull downward to lift the main advantage of passing a rope upward through a single pulley rather than just up over the branch of a tree is that the pulley?
Answer :- The pulley reduces friction.
What would happen to a pulley system if the load were increased?
Ideal mechanical advantage is the mechanical advantage when there is no friction. It 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. But actual mechanical advantage will be less than this ideal mechanical advantage due to friction. In other words the efficiency will be less than 100 %. If the efficiency is 80%, it implies 20% is wasted due to friction while lifting a load. If we increase the load the friction also increases and hence the efficiency will decrease with the load.
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
When you what to pull downward 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?
Reduces friction
Does a tire or pulley have more friction?
A tyre has more friction than a pulley.
When you want to pull downward to lift something the main advantage of passing a rope upwards and through a single pulley rather than just up over the branch of a tree is that pulley?
Reduces friction
When you want to pull downward 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 .?
Reduces friction
