- The time taken for one complete vibration
Your answer:
velocity
period
frequency
wavelength
- If you double the frequency of a vibrating object, its period will be....
Your answer:
doubled
quartered
quadrupled
halved
- When a pendulum clock is taken from sea level to the top of a high mountain, it will...
Your answer:
neither lose nor gain time
lose time
gain time
no answer
- For an object undergoing simple harmonic motion...
Your answer:
the acceleration of the object is proportional to its displacement from its rest position
the net force acting on it is proportional to its displacment from its rest position
neither are true
both are true
- An object is vibrating on the end of a spring. If the mass of the object is doubled the period of vibration will....
Your answer:
none of them are correct
quarter
halve
double
- Spring shock absorbers for a moon buggy are tested on Earth. One the Moon the same shocks under the same load will vibrate
Your answer:
the same as on Earth
slower
no way to tell
faster
- Condition where the frequency of the forced vibration matches the object's natural frequency
Your answer:
echo
verberation
interference
resonance
- Using the graph the spring force constant is...
Your answer:
4.99 N/m
0.040 N/m
24.9 N/m
31.3 N/m
- If a 0.35 kg mass is placed on the spring in question 8 pulled down with an initial displacement of 5cm, determine the period of vibration
Your answer:
53 s
0.74 s
0.09 s
none of these answers are correct
- The graph above is produced for a mass oscillating on a spring over time.The amplitude of motion is
Your answer:
-14 cm
6 cm
10 cm
20 cm
- The frequency of vibration for the mass in question 10 is
Your answer:
6 Hz
1/6 Hz
5 Hz
1/5 Hz
- A hanging mass is moving up and down as shown by the d-t graph above. What trig function would describe the net force acting on the mass over time?
Your answer:
-Fcos(2(pi)ft)
Fsin(2(pi)ft)
Fcos(2(pi)ft)
-Fsin(2(pi)ft)
- A 45g mass is moving back and forth on a spring with a force constant of 2.36 N/m. Using the graph from question 12 determine the max speed on the mass
Your answer:
0.43 m/s
0.22 m/s
1.6 m/s
0.004 m/s
- What is the maximum net force acting on the mass in question 13? (Hint: F = m a)
Your answer:
1.6 N
0.003 N
0.07 N
0.14 N
- When a mass is traveling through the equilibrium position what can you say about the magnitude of its speed, acceleration and net force?
Your answer:
speed is the smallest, accleration is the smallest and net force is the smallest
speed is the biggest, accleration is the smallest and net force is the smallest
speed is the biggest, accleration is the biggest and net force is the biggest
speed is the smallest, accleration is the biggest and net force is the smallest
- A radio receiver can be tuned to pick up the forced vibrations of electrons in the antenna from a particular radio station signal of a certain frequency because
Your answer:
the electrons in the antenna only vibrate with one particular frequency which is what the tuning circuit detects
none of these answers are correct
the electronics in the tuning circuit vibrate with a precise resonant frequency that can be adjusted electronically to match the frequency of forced vibrations from any station
the electronics in the tuning circuit picks up all signals equally but only amplifies the one you want
- The reason the Tacoma Narrows Bridge collapsed in 1940 is
Your answer:
the winds were very high and pushed the bridge into a rocking motion
an earthquake wave matched the natural frequency at which the road deck liked to vibrate
the deck was too flexible and not aerodynamic. This led to the formation of vortices which set up torsional forced vibrations at the resonant frequency of the deck
the cars going over the bridge were going at just the right speed to push it into a violent motion
- The Cypress Viaduct collapsed in 1989 because
Your answer:
it was old and salt in the ocean air had coroded the steel reinforcement
a low frequency earthquake wave matched the natural resonant frequency of the reinforced concrete frame leading to large amplitude forced vibrations
the bridges spans were not reinforced
it was built on poor soil so parts of it sank
- The inner ear is able to detect different frequncies of sound because
Your answer:
the basilar membrane has different natural frequencies at different positions along its length
the eardrum vibrates more at certain frequencies
the three bones transmit different frequencies
the ear canal has the natural resonat frequency
- When the motion of an object in SHM dies down quickly we call it
Your answer:
damping
shortening
fatiguing
bouncing