Question

Two advantages of applying the effort downward in block and tackle system​

Answer 1

Answer:

A block and tackle is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.  

The pulleys are assembled together to form blocks and then blocks are paired so that one is fixed and one moves with the load. The rope is threaded through the pulleys to provide mechanical advantage that amplifies the force applied to the rope.

Hero of Alexandria described cranes formed from assemblies of pulleys in the first century. Illustrated versions of Hero's "book on raising heavy weights" show early block and tackle systems

Answer 2

Explanation:

1. it provides convenient point to applies force.

2. helps to maintain its advantages and at same time changes the direction of applied force.