In this experiment we will observe the properties of a pendulum moving in
a

circular motion rather than the traditional "back and forth" motion.
This

will simulate the direction that a satellite would follow above the
earths

atmosphere. The purpose of this experminate will be to show how
gravity pulls on

the string and the path that the pendulum follows. Apparatus
used: 1. Pendulum

with long string 4. Digital stop watch 2. pendulum clamp 5.
two-meter stick 3.

circular path draen on paper 6. vernier caliper
procedures: hang the pendulum

for the attached rod and allow the pendulum so
its nearly to the floor. Then

align the ball with the center of your circled
paper and center the pendulum

onto the circle. Practice rotating the pendulum
so it follow the circle that you

have made. After you have practiced this a
few times make a mark on the circle,

this is your starting point. Start the
pendulum into motion so it will follow

its path on the paper and after it has
made a complete reveloution that is your

first turn. Using your stop watch
start timing the reveloutions that it has

made. You can use as many turns as
you like, just remember that you must make 1

complete turn before stateing
that it is one turn. Data: Average radius of

pendulum arc 30.5cm (Converted
to Meters - .0153m) Length of pendulum

string( to the top of bob) - 161.8cm
Bob diameter 2.5cm Pendulum length to

center of bob - 163.05cm Angle of
string from vertical 5.38° Time for 4

reveolutions = 10.57 seconds. Average
period = 2.643seconds. Average speed 2.376

m/sec. (15.25/1000 =
.0153m*.364m/sec = 2.376 m/sec.) Am= .865 m/sec Ap = .923 %

difference = {(am
Ap)/Ap} * 100% = -6.28%