Work-Kinetic Energy Theorem Activity

On this case, we use the logger pro to measure the Kinetic Energy. There are two Expts to do that.

At the first case, we put the cart to pull the spring, after it pull a position, release it from the initial position, then the logger pro will measure the graph about Force vs. Position. We note that, then we put different mass on the cart, and do it again. we note different date. As these pictures show.

the purple area is the work done area. As the graph show, the work done is should be same as work done area. the purple line is the total force and the black line means Kinetic Energy.

On the second case, this lab show the graph which is about Force vs. Stretch of the rubber band. The work done area is between the line which is force and the x-axis.

As this graph of lab show, there are some important dates on the picture. If we use the function about triangle(1/2*length*height), and the function of trapezoid(1/2*(top length+bottom length)*height), the area is the work done. Finally, we plus them all, we would get the total work done,