Understanding Simple Harmonic Motion: Checking Your Answers | Homework Help

[future_vet]

Hi! Could you please check my answers? Thanks!

Homework Statement

Homework Equations

The Attempt at a Solution

1. The time for one cycle of a periodic process is called the (Points: 1)
amplitude.
wavelength.
frequency.
period. <-------


2. A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the mass located when its potential energy is maximum? (Points: 1)
at either A or B < --------
midway between A and B
one-fourth of the way between A and B
none of the above.


3. What happens to a simple pendulum's frequency if both its length and mass are increased? (Points: 1)
It increases.
It decreases. <----------
It remains the same.
It could remain the same, increase, or decrease; it depends on the length to mass ratio.


4. For a wave, the frequency times the wavelength is the wave's (Points: 1)
speed. <--------
amplitude.
intensity.
power.


5. A 2.0 kg mass is attached to the end of a horizonal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.1 m. What is the total mechanical energy of this system? (Points: 1)
0.020 J
25 J <------- (5/(2x0.1)
0.25 J
1.0 J

 

[future_vet]

Actually it's ok you don't need to help. :)

 

[m2003]

Hi! Thank you for your submission. I am a scientist and I would be happy to check your answers for you.

1. Your answer for the first question is correct. The time for one cycle of a periodic process is called the period.

2. Your answer for the second question is also correct. The mass is located at either point A or B when its potential energy is maximum.

3. Your answer for the third question is incorrect. When both the length and mass of a simple pendulum are increased, its frequency decreases. This is because the length and mass are inversely proportional to the frequency of a pendulum.

4. Your answer for the fourth question is correct. The frequency times the wavelength is equal to the speed of the wave.

5. Your answer for the fifth question is also correct. The total mechanical energy of the system can be calculated by multiplying the mass (2.0 kg) by the square of the angular frequency (50 N/m), which results in 25 J. Good job!

I hope this helps and good luck with your studies! If you have any further questions, please do not hesitate to ask. Keep up the good work!