#$&*
course PHY 231
11/7/14 10:00am before lab
ball collision of the edge:b1 = moving ball
b2 = static ball
before collision b1 is giving rolling velocity down ramp
without b1 colliding with b2m has a falling distance x1 off edge
without colliding with b1, b2 falls to a distance x2 off edge
when b1 collides with b2 , b1 travels x2 and b2 travels x1 approximately. The energy is transfered from b1 to b2 so that their velocities transfer with some lose of energy to the ramp and b2's holding system.
for both ball system b2 travels < x1 and b1 travels > x2 by a small amount.
Harmonic motion:
using a motion graph computer the peaks for the movement wave are
trial 1
5.8 s
14.45 s
23.00 s
31.55 s
39.8 s
48.35 s
55.6 s
65.1 s
73.3 s
81.75 s
89.6 s
with an approximate period of 8 seconds
trial 2
magnet moved closer to the center
4.9 s
12.25
19.25
26.00
32.5
38.8
45.05
51.15
57.1
with an approximate period of 7 seconds
trail 3
magnet moved closer
4.00 s
8.9 s
13.95 s
18.9 s
23.75 s
28.6 s
33.7 s
38.55 s
with an approximate period of 5 seconds
the amplitudes decrease but the periods between peaks remain the same indicating harmonic motion similar to a pendulum
For the ball collision on a ramp going down and up and separate angels
we had a physics argument over the nature of the energy loss and potential energy
ball starting at on a ramp whose L is equal to the connected one but with a slope 2x the slope of the second
it would appear that the energy lose per cycle (up and back) was about 1/2 because the ball traveled full to the end of the ramp whose slope was 1/2 the first. However after lots of discussion I am not quite sure the actual energy of the system.