B3

All the simple machine are alike and different. They are alike because they all use mechanical advantage. Also they all can change direction, speed, and force but they cannot change work. The thing that makes them different is their design. They all have many different shapes. The Wheel and Axle is a circular object with a center post. A pulley is a grooved wheel with a rope in the groove. A lever is straight object pivoting side to side on a fulcrum. The screw is a inclined plane wrapped around around a cylinder. The inclined plane is a flat piece at an angle. Finally the wedge is a double inclined plane that moves. In conclusion this is why the six different simple machines are similar and different.

D1

I believe that the most frequently used simple machine is the wheel and axle. You use this simple machine when you are riding bike down the street. It is used when you open the door and close the door. A doorknob is a wheel and axle. It is used when you drive a car down the street. The wheels are wheels and axles and also the steering wheel is a wheel and axle. In conclusion that is why I believe the wheel and axle is the most frequently used simple machine.

C1

If I was a simple machine I would be screw. This is because they come in so many types and sizes. I would like having a great variety of choices of what to look like and what to do. Every box of screws is a little different from the others. They come in different pitches and mechanical advantages. Also screws are different in what material they should be screwed into. Some get screwed into wood or sheet metal. Some get screwed into drywall or into dirt. In conclusion if I could be a simple machine I'd be a screw.

proicdure

1.] Find the force of each toy
2.]get on the floor and record the distance for three tirals
3.] use the stop watch to record the time for three tirals
4.] find the average of distance
5.] multply force by distance to get work
6.] fin average of time
7.] do work divided by time
8.] record data on a bar graph
9.] begin your report

prod hy list

Prodlem: Will the pick up truck will use more power.

Hypothesis: The Truck shall use more power do to it's mass

Matirals:
A toy truck
A toy train
a meter stick
something to record data
spring scale
stop watch

Power Lab