Question

What is a block and tackle system of pulleys ?

Answer 1

A pulley is a wheel on an axle or shaft that supports movement and direction changing of a taut cable or belt, as well as power transfer between the shaft and the cable or belt. The supporting shell is termed a block, and the pulley is called a sheave in the case of a pulley supported by a frame or shell that does not deliver power to a shaft but is used to direct the cable or apply a force.

Complete step by step answer:
A block and tackle, also known as an only tackle, is a lifting device that consists of two or more pulleys connected by a rope or cable. The pulleys are put together to make blocks, which are then coupled such that one is stationary and the other moves with the weight. The rope is strung through the pulleys to provide mechanical advantage, which increases the force exerted to the rope. A block is a single frame with a series of pulleys or sheaves placed on it. The term tackle refers to a set of blocks with a rope strung through the pulleys. "Reeving" refers to the process of threading ropes through blocks, and "rove" refers to a threaded block and tackle.
To raise big objects, a block and tackle system increases the tension force in the rope. They're prevalent aboard boats and sailing ships, where manual duties are widespread. The employment of a single continuous rope to convey a tension force around one or more pulleys to lift or move a load is known as a block and tackle. The amount of sections of the rope that operate on the load gives it a mechanical advantage. A tackle's mechanical advantage determines how much simpler it is to carry or lift a weight. The mechanical advantage of a block and tackle is equal to the number of components in the line that either connect to or run through the moving blocks if frictional losses are ignored.

Note:
The use of a single continuous rope to convey a tension force around one or more pulleys to lift or move a weight is characterised by a rope and pulley system, often known as a block and tackle. The rope can be a light line or a robust cable. The list of basic devices identified by Renaissance scientists includes this system. The mechanical advantage of the rope and pulley system is the number of sections of the rope that operate on the load if it does not dissipate or store energy.