block and tackle
Engines, sewing machines, band saws, and anything else that uses simple machines.
If you have a single pulley, then you would need to exert 100N + an amount to overcome friction in your pulley.If you have 2 pulleys, rope connected to a beam at top, descends through pulley on item lifted, and back up through pulley at the top and then down to where you are pulling. Then the force is split in half and you would exert 50N + an amount to overcome friction.If you connect a rope to the item, up through a double pulley, down through a pulley on the item, and back up through the double pulley again and down to the person who is pulling. Then you divide the force into thirds, and the force is 33.3N + an amount to overcome friction.Essentially count the upward pulling ropes and divide by that number. A rope simply looping over a pulley that you're hanging onto the other end of only counts as once, and would be no different from you pulling up directly on the object, or on a pulley connected to the object.
A compound machine that consists of both fixed and movable pulleys is a fixed pulley. This machine changes the direction of the force on a rope or belt that moves along its circumference.
movable single multiple fixed inclined
The 3 kinds of pulley are the Fixed, Movable and Compound Pulley.
A bicycle consists mainly of Wheel and axles, levers, screws
It is called a compound machine.
hoistselectric elevatorscranes
Movable and fixed.
Two kinds of pulleys are the fixed pulley and the movable pulley
Movable pulleys allow you to adjust your exercise to target different muscles or work them in different ways, and adjust the machine to better work with your body size and shape.
it is a movable pulley
Movable pully
There are two types of pulleys 1. movable pulley 2. fixed pulley