PHYS165 / PHYS 165 Module 6: (Latest
Update 2026 ) Physics | Questions &
Answers | Grade A | 100% Correct -
Portage Learning
Periodic Motion
the motion that exactly repeats itself at a regular time interval
Period
the time it takes to complete one repetition or cycle
The time interval in periodic motion is called the... and the symbol used
period of motion.
Symbol "T"
Frequency and its symbol
how many cycles of motion occur in one second.
Symbol: 'f"
The period T =
# seconds / # cycles
Units of period
seconds (s)
The frequency f =
1/T or #cycles / @seconds
Unis of frequency
Hertz (Hz)
,Simple Harmonic Motion
a special type of motion where the restoring force and acceleration of the object are
both directly proportional to the distance from the equilibrium position.
Ex: mass on a spring
Sinusoid
the resulting graph of the position of simple harmonic motion. It can be expressed with
the sine function
Equilibrium position
The position where the net force on an object is zero.
Restoring force
A force that acts to return an object to its equilibrium position
Amplitude of the oscillation
the maximum distance of an object in SHM from the equilibrium position (zero).
Units of amplitude
meters (m)
Does the frequency depend on the amplitude?
No
If the mass was released with half the amplitude, the frequency would be....
the same
Key condition for SHM
the farther the object is from equilibrium, the greater the restoring force acting on it
Direction of restoring force in SHM
, Always towards the equilibrium position
Displacement of velocity at its maximum
Zero
Kinetic energy at equilibrium position
Maximum
Potential energy at equilibrium position
Zero
When is potential energy at the maximum?
When the spring is stretched or compressed the most.
Maximum at each endpoint and zero at the center of motion.
Energy conservation in SHM
Continuous exchange of between kinetic and potential energy
Examples of Simple harmonic oscillators systems
Pendulum and mass on a spring
Pendulum
A system with a mass (m, bob) attached to a string or rod of length L that swings back
and forth about a pivot.
Bob
mass at the end of a pendulum
Restoring force in a pendulum
Gravity
Two things that affect the period of a pendulum
Update 2026 ) Physics | Questions &
Answers | Grade A | 100% Correct -
Portage Learning
Periodic Motion
the motion that exactly repeats itself at a regular time interval
Period
the time it takes to complete one repetition or cycle
The time interval in periodic motion is called the... and the symbol used
period of motion.
Symbol "T"
Frequency and its symbol
how many cycles of motion occur in one second.
Symbol: 'f"
The period T =
# seconds / # cycles
Units of period
seconds (s)
The frequency f =
1/T or #cycles / @seconds
Unis of frequency
Hertz (Hz)
,Simple Harmonic Motion
a special type of motion where the restoring force and acceleration of the object are
both directly proportional to the distance from the equilibrium position.
Ex: mass on a spring
Sinusoid
the resulting graph of the position of simple harmonic motion. It can be expressed with
the sine function
Equilibrium position
The position where the net force on an object is zero.
Restoring force
A force that acts to return an object to its equilibrium position
Amplitude of the oscillation
the maximum distance of an object in SHM from the equilibrium position (zero).
Units of amplitude
meters (m)
Does the frequency depend on the amplitude?
No
If the mass was released with half the amplitude, the frequency would be....
the same
Key condition for SHM
the farther the object is from equilibrium, the greater the restoring force acting on it
Direction of restoring force in SHM
, Always towards the equilibrium position
Displacement of velocity at its maximum
Zero
Kinetic energy at equilibrium position
Maximum
Potential energy at equilibrium position
Zero
When is potential energy at the maximum?
When the spring is stretched or compressed the most.
Maximum at each endpoint and zero at the center of motion.
Energy conservation in SHM
Continuous exchange of between kinetic and potential energy
Examples of Simple harmonic oscillators systems
Pendulum and mass on a spring
Pendulum
A system with a mass (m, bob) attached to a string or rod of length L that swings back
and forth about a pivot.
Bob
mass at the end of a pendulum
Restoring force in a pendulum
Gravity
Two things that affect the period of a pendulum
