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What are the three kinds of pulley?
1. The fixedpulley - requires more effort than the load. 2. The movable pulley - moves with the load which allows for less effort than load. 3. The combined pulley - effort is less than half the weight of the load
What are fixed and movable pulleys and give examples of each?
a movable pulley is a wheel and a rope that is used to raise a load
How are a fixed pulley and a movablepulleydiffrent?
Using a movable pulley is known as using it to 'advantage'. The line going to the movable pulley contributes towards the force acting on the load. A line going to a fixed pulley, only serves to change the direction of the force.
Velocity ratio of single movable pulley is 2. Give reasons.?
Load "L" is attached to the movable pulley. A rope is fixed at a point in ceiling that passes through the movable pulley. In order to lift the load "L" by "X" meters, the effort "E" needs to travel the distance of 2X meters. (The entire rope needs to be pulled by "E" for a distance of 2X.) Now, Velocity Ratio equals (Distance traveled by "E") divided by (Distance traveled by "L") So it becomes : 2X/X. This equals to 2 Since it is a ratio. it has no units of measurement. -Kiran Karnik
What is a 1st class pulley?
A fixed pulley with a rope passing through the pulley. The load is attached to one end and a force is applied to the other end.
What are the three kinds of pulley?
1. The fixedpulley - requires more effort than the load. 2. The movable pulley - moves with the load which allows for less effort than load. 3. The combined pulley - effort is less than half the weight of the load
What pulley is attached to the load and moves as the load moves Hi I'm Gretchen?
Hi Gretchen, this arrangement to gain mechanical advantage is often referred to as a "block and tackle". It consists of pulleys and ropes, usually not more than four, where the pulley attached to the load moves with the load, and the mechanical advantage is determined by the number of ropes.
What is the advantage of a movable pulley?
a fixed pulley changes the direction you are executing the force in. fixed pulleys are made to work with gravity which makes the work you must use less than if you were lifting straight up and against gravity.
Would you use a fixed pulley or movable pulley to lift a heavy load?
Fixed if it weighed as less than you, but a movable pulley wouldn't be helpful here. You'd be best with a pulley with multiple supporting ropes.
What are fixed and movable pulleys and give examples of each?
a movable pulley is a wheel and a rope that is used to raise a load
Are two types of pulley's?
There are two basic types of pulleys. When the grooved wheel is attached to a surface it forms a fixed pulley. The main benefit of a fixed pulley is that it changes the direction of the required force. Another type of pulley, called a movable pulley, consists of a rope attached to some surface. The wheel directly supports the load, and the effort comes from the same direction as the rope attachment.
How are a fixed pulley and a movablepulleydiffrent?
Using a movable pulley is known as using it to 'advantage'. The line going to the movable pulley contributes towards the force acting on the load. A line going to a fixed pulley, only serves to change the direction of the force.
What two types are pulleys?
There are two basic types of pulleys. When the grooved wheel is attached to a surface it forms a fixed pulley. The main benefit of a fixed pulley is that it changes the direction of the required force. Another type of pulley, called a movable pulley, consists of a rope attached to some surface. The wheel directly supports the load, and the effort comes from the same direction as the rope attachment.
What is moveable pulley?
A fixed pulley is a pulley that is attached to a structure and does not move;changes the direction of the effort force used to life a load by a person or a spring scale and if you use a spring scale then you will need a person to pull the spring scale done to see how far she/he pull it A moveable pulley is a pulley that supports the load and is not fixed in place;reduces the amount of effort force needed to pull to lift the load when she/he pulls the spring scale then it will tell she/he pulls it.
Velocity ratio of single movable pulley is 2. Give reasons.?
Load "L" is attached to the movable pulley. A rope is fixed at a point in ceiling that passes through the movable pulley. In order to lift the load "L" by "X" meters, the effort "E" needs to travel the distance of 2X meters. (The entire rope needs to be pulled by "E" for a distance of 2X.) Now, Velocity Ratio equals (Distance traveled by "E") divided by (Distance traveled by "L") So it becomes : 2X/X. This equals to 2 Since it is a ratio. it has no units of measurement. -Kiran Karnik
What class is a pulley?
A fixed pulley with a rope passing through the pulley. The load is attached to one end and a force is applied to the other end.
What is it called when a pulley moves up with the load as it is lifted?
This mainly occurs in a multiple pulley system, but there is no particular name for it.
