Simple Machines

One of the ways that we use simple machines in our life is using the screw. We use screws in the chicken house and in the toy barn that me and my dad built. We also use screws in the chairs and stools. Another way that we use simple machines is the pulley that we use  on the tailgate of the cattle and calf chute. How we use the pulley is that I pull on the rope and the gate is pulled up so the cow or calf can get in. 

One thing that I thought was interesting is the mud dauber. It makes its nest out of mud and stings spiders so they are still alive but they can not move. So then when they lay their eggs their offspring can eat the spiders. So when I saw them I wondered if that is where the idea for adobe houses came from.