pulley

this week for inquiry we had to make a copy of a google drawing that the teacher made .You have to get into groups of four .We got two sticks and a rope. We had to make a knot and we had to tie it around the stick. And then pull and  pull the people holding the sticks . When we were done we had to make a copy of the drawing.  When we had to write  how many times we had to wrap it around the sticks before we could move it.  Then we had to write what things in the to world that use pulleys . Pulleys are used to move heavy loads like the elevators, the cranes in building and constructions sites.  Pulleys are also used in water wells.