grooves
The load arm is the radius of the pulley. This is the distance from the fulcrum to the load-carrying side of the rope.
no it can have anything that is like a rope, for example a steel cable or my big a s s pen15
A pulley halves the force required to lift a load, but doubles the length of rope or cable. So if you had a 10lb. weight attached to a rope, and were pulling the rope upward, you would need 10lbs. of force to lift it. However, if you had a pulley attached to a beam overhead, and were pulling down on the rope, you would only need 5lbs. of force to move the weight, but you would need to pull twice as much rope to get the weight to move the same distance.
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
Effort Arm
effort arm
The part of a pulley where the rope lies is called the groove or the sheave. This is the part of the pulley that provides the surface for the rope to run along while the pulley rotates.
When using a pulley, the effort is applied to the rope or cable that is being pulled to lift the load, while the load is exerted on the object being lifted by the pulley system. The mechanical advantage of the pulley system helps reduce the amount of effort needed to lift the load.
The middle part of a pulley is called the wheel or sheave. It is the round component that rotates on an axle and around which the belt or rope travels. The wheel is typically grooved to keep the belt or rope in place and provide a better grip for transmitting force.
A single fixed pulley provides a mechanical advantage of 1, meaning the distance the effort rope must move is equal to the distance the resistance is raised. Therefore, the effort rope must move 4 meters to raise the resistance 4 meters when using a single fixed pulley.
pulley
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.
Pulley.
A pulley doesn't raise or hoist sails. A pulley is just a wheel that eases a change in direction of a rope. It is a rope that hoists or raises sails. A rope for this purpose is called a Halyard.
When you apply effort to a moveable pulley, the load being lifted rises because the pulley reduces the amount of force needed to move the load. This is because the force is distributed between the effort applied and the tension in the rope supporting the load.
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.