EXTRA CREDIT Calculate the TOTAL mechanical energy of a pondulum (mass = 4kg) as it swings
from its highest point to its lowest point. Use your equations for gravitational
potential energy and kinetic energy to determine these values based on the data
givon below. Total energy is the sum of gravitational potontial energy and kinetic
energy. In this problem, round gravity to g=10m/s2
KE
PE
PE
KE
OPE
a Complete this tablo
Highost Point
Lowest Point
0.0
50
Velocity (m/s)
Height (m)
1.25
00
Kinolic Energy (1)
Potontial Energy (1)
Total Energy (1)
b. What can you conclude about the total mechanical energy of a pendulum as it
swings back and forth?
Explain your results here

Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.