This post was for a task on week 3. I needed to find a free to use image that I could use in my blog
Most of you probably know that this is an excavator. What you may not know is how it crays such heavy loads. It ,along many other construction vehicles, uses hydraulic cylinders. Hydraulics are slow but are extremely strong. They work by pushing water through an air tight tube from one cylinder to another cylinder. the water can’t move balk unless the first tube is moving balk or if there in a leach.