PHYS 165 MODULE 6 EXAM
1. What do we call *motion that is repeated as a function of time*?
Answer Periodic Motion
2. Of the following objects in motion, which one is exhibiting simple harmonic
motion?
Answer Pendulum swinging back and forth, a mass bouncing on a spring, a metronome
Periodic motion where the restoring force and acceleration of the object are both directly proportional to the distance
from the equilibrium position
3. True or False
A scientist wants to make the period of a pendulum *smaller*. One way to
accomplish this would be to *increase* the acceleration due to gravity.
Answer *True*
Shorter Period= increase acceleration
Longer Period= Increase the string length, decrease the acceleration due to gravity by going to the moon.
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, 4. True or False
A scientist is experimenting with an object bouncing on a spring. In order to
*decrease* the period of the object bouncing on the spring, the scientist could
do either of the following
*increase* the mass of the object or *decrease* the spring constant of the
spring
Answer *False*
decrease =
increase =increase mass, decrease spring constant
5. True or False
Electromagnetic waves need a medium to disturb.
Answer *False*
- Electromagnetic waves have the ability to travel through a vacuum. They do not need a medium in order to exist.
- Sinusoidal transverse waves.
- Electric and magnetic parts have proportional relationship with each other.
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1. What do we call *motion that is repeated as a function of time*?
Answer Periodic Motion
2. Of the following objects in motion, which one is exhibiting simple harmonic
motion?
Answer Pendulum swinging back and forth, a mass bouncing on a spring, a metronome
Periodic motion where the restoring force and acceleration of the object are both directly proportional to the distance
from the equilibrium position
3. True or False
A scientist wants to make the period of a pendulum *smaller*. One way to
accomplish this would be to *increase* the acceleration due to gravity.
Answer *True*
Shorter Period= increase acceleration
Longer Period= Increase the string length, decrease the acceleration due to gravity by going to the moon.
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11
, 4. True or False
A scientist is experimenting with an object bouncing on a spring. In order to
*decrease* the period of the object bouncing on the spring, the scientist could
do either of the following
*increase* the mass of the object or *decrease* the spring constant of the
spring
Answer *False*
decrease =
increase =increase mass, decrease spring constant
5. True or False
Electromagnetic waves need a medium to disturb.
Answer *False*
- Electromagnetic waves have the ability to travel through a vacuum. They do not need a medium in order to exist.
- Sinusoidal transverse waves.
- Electric and magnetic parts have proportional relationship with each other.
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