It's a device that consists rope and move-able wheel that is used to raise a load of something up!
True, a pulley is considered a simple machine. It is used to lift or move objects by changing the direction or magnitude of the force applied.
A window shade is a type of pulley system simple machine. It uses a pulley to raise and lower the shade, making it easier for users to control its position.
A fixed pulley is a type of simple machine known as a pulley. It changes the direction of the force applied to lift an object but does not provide any mechanical advantage.
The formula for the percent efficiency of a pulley is (output work/input work) x 100%. It compares the output work (work done by the pulley) to the input work (work done on the pulley) to determine how efficient the pulley system is in transferring energy.
Some of the input force is lost due to friction. If you are using a pulley system then there is friction between the rope and the pulley and there is also friction within the ball bearings of the pulley itself. If you are using an inclined plane there is friction between the plane and the object traveling upon it. In a friction-less world the input is equal to the output.
Pulley machine type of many! Machine have many pulley, many pulley machine! Type machine, many pulley type. Pulleys, type pulley machine many type. Machine.
it makes our work faster,easier and better
what is the function of a pulley in a sewing machine
description of pulley machine
pulley
A pulley isn't a kind of simple machine, it is a simple machine
simple machine
A flagpole is a pulley.
The bicycle is not a simple machine, there are too many interacting moving parts.
True, a pulley is considered a simple machine. It is used to lift or move objects by changing the direction or magnitude of the force applied.
A simple machine is a closed mechanical system that changes the direction and/or the magnitude of a force using only the work and energy supplied by the operator. A lever is an example of a simple machine, and so is a pulley. . A clothes line - the kind that has a loop of cable bound by one pulley at each end - is a simple machine. As you pull one side of the loop toward you, the other side of the loop moves away from you, thanks to the action of the pulleys. Since you are doing all the work (there is no motor or other source of energy), this reversal of direction qualifies as a simple machine.
No it is not. A belt, for example, goes around a pulley.