A crane is a lifting machine, generally equipped with a Winder(also called a wire rope drum), Wire_ropeor Chainand Sheave_(mechanical), that can be used both to lift and lower materials and to move them horizontally.
wagons it has to constas of a rope or belt
In a real pulley system, the work supplied must overcome both the gravitational force acting on the load and the frictional forces present in the system. Due to these factors, the actual work output is always less than the work input, which means that some energy is lost as heat due to friction. Therefore, the efficiency of the pulley system is determined by how much of the input work is converted into useful work lifting the load. It's essential to account for these losses when calculating the mechanical advantage and effectiveness of the system.
If it goes up just some, it could be considered a ramp, or inclined plane. Otherwise it is not any sort of simple machine. Good question though:)
The block and tackle (or pulley system) was brought to us by Archimedes (287BC - 212BC) in Greece, but neither Archimedes, nor any who wrote about him and his extraordinary work dated the invention.stupid answer
Single fixed pulley
A crane is a movable pulley
A crane is typically a combination of a pulley system and a lever. The pulley system helps to lift heavy loads by reducing the amount of force required, while the lever provides mechanical advantage for moving and positioning the load.
An example of a complex machine using a pulley and a screw is a crane. The pulley system allows for the lifting of heavy loads, while the screw mechanism is used to control the height and position of the crane's arm. Together, they enable the crane to efficiently move and position objects with precision.
crane
A crane utilizes a combination of simple machines, but the primary one involved in lifting a load is the pulley. The pulley system allows the crane to lift heavy loads with relatively less effort by applying force over a distance.
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.
it was called a pulley because you could hang stuf on it and then you could pull it... a pulley could be a crane or esaltor.
There are many examples of a pulley system such as a drawbridge in a castle or a set of rock climbing gear
An example of a compound pulley system is a crane. This system involves multiple pulleys connected in multiple systems to provide mechanical advantage for lifting heavy loads. By distributing the weight across various pulleys and ropes, a compound pulley system makes it easier to lift heavy objects.
A block and tackle pulley system consists of one fixed pulley and one moving pulley working together to lift heavy loads with less effort. For example, a flagpole typically uses a block and tackle pulley system to raise and lower the flag.
Use a pulley (crane) .
pulley system, much like the cabled elevators work.