Physics
Physics, 25.04.2020 03:22, dhhdndnd

Simple Harmonic Motion Problems:

23. Scenario:

Consider a class of physics students in a three-story schoolroom with a high ceiling. (The ceiling is high enough to be the ceiling of the third floor.) The teacher connects a long rope to the ceiling. The free end of the rope is connected to a heavy ball that almost touches the floor when the rope is vertical, creating a very large scale pendulum where the ball travels almost completely in the horizontal direction. The teacher pulls the heavy ball a small distance to the side and releases it so that it oscillates with a certain period, amplitude, and average speed. The teacher then repeats the demonstration but releases the ball from a greater displacement than before. The teacher asks the students to think about how the period, amplitude, and average speed will change for this greater displacement.

Carlos and Angela agree that the amplitude will be greater but disagree on other points. They reason as follows:

Angela: The period will be greater because the distance the ball must travel in one cycle depends on the amplitude. A greater amplitude means a greater distance, which means it takes a longer time to complete one cycle.

Carlos: The period should be shorter because the ball will have a greater average speed as it cycles. A greater average speed would mean that it takes less time to complete a full cycle.

Analysis:

A. Suppose that A represents the amplitude, the distance that the ball travels from equilibrium to one end point of its oscillation, and T represents the period of the oscillation. Write an equation for Vavy, the average speed (in terms of the amplitude A and the period T) of the ball as it oscillates. i) Explain how this equation shows support for Angela's reasoning. ii) Explain how this equation shows support for Carlos's reasoning. Simple Harmonic Motion Problems: (continued from previous page)

B. Argumentation: Carlos is correct that a greater amplitude of oscillation will result in a greater average speed. 1. Explain why this is the case, reasoning in terms of the forces exerted on the ball as it oscillates. II. Explain again, this time reasoning in terms of mechanical energy of the ball-Earth system,

C. Give a correct prediction about whether the period increases, decreases, or remains the same as amplitude increases, assuming that the pendulum undergoes small-angle oscillations in both cases. Use one students explanation or synthesize the two explanations to justify your claim. Period will: _Increase __ Decrease _Remain the same

answer
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 11:30, 21ghostrider21
Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above
Answers: 1
image
Physics, 22.06.2019 16:30, safiyyahrahman6907
One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.
Answers: 1
image
Physics, 22.06.2019 20:20, breannaasmith1122
Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.
Answers: 3
image
Physics, 22.06.2019 21:30, cigo145
The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d
Answers: 2
Do you know the correct answer?
Simple Harmonic Motion Problems:

23. Scenario:

Consider a class of physics...

Questions in other subjects:

Konu
Mathematics, 20.03.2020 12:30