In each trial of study 1, the source of kinetic energy of C1 was which of the following? a. The kinetic energy stored in C2 before the spring was released. b. The potential energy stored in C2 before the spring was released. c. The kinetic energy stored in the spring before the spring was released. d. The potential energy stored in the spring before the spring was released.
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
![Study 1
For all 3 trials of Study 1, ČI had a mass of 1.0 kg.
However, the mass of C2 was varied from trial to trial. At
the start of each trial, Ct and C2 were at rest, separated
only by a spring that was compressed. The amount of com-
pression was the same for each trial. When the spring was
released, the expanding spring caused the carts to move in
opposite directions (see Figure 1).
compressed spring
cart
C1
C2
spring released
C1
C2
top view
Figure I
The students measured the speed, in m/sec, of each cart,
and then calculated P of each cart (sce Table 1).
Table 1
Speed
(m/sec)
P
Mass of
C2
(kg)
(kg m/sec)
Trial
C1
C2
C1
C2
1.0
2.0
3.0
0.104
0.116
0.120
0.104
0.062
0.041
0.10
0.12
0.12
0.10
0.12
0.12
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