June 14, 2012

Today in class we first went over the postgame review of what we did yesterday.1. Mass=kg, force=newtons, gravity=N/kg (10 on earth), work=joules, distance=meters2. Force - Push or pull3. Energy - The ability to do work4. The force of gravity = weight5. work = energy EquationsF = mg(force = mass x gravity) w = Fd(Joules = N x meters)

 Next, we did the pyramid lab with our new groups. In this lab, we experimented with how the steepness of a ramp affects the force needed to move a weighted car over a certain distance. Just as we learned yesterday, as the distance from the car to the destination decreased, the force needed to move it to that point increased. In addition, just as predicted, the areas of each graph was approximately the same.

Lastly, we took our test on simple machines to finish off the day. Real world connections:​Simple machines such as levers and ramps have infinite uses in the real world. For example, in order for the ancient Mesopotamians to build their buildings out of mud and clay bricks, they needed to use levers to life these materials up, and they needed ramps to move the bricks up towards tall buildings. Also, they needed to use levers to move heavy rocks out of the way to make space for building projects.