- #1
Sarina3003
- 20
- 0
1. Homework Statement Homework Equations
equations is not needed here
The Attempt at a Solution
I have no idea :(
Please help me![/B]
Understanding Uniform Circular Motion to Solving Problems
- Thread starter Sarina3003
- Start date
Click For Summary
Homework Help Overview
The discussion revolves around understanding uniform circular motion and its implications, particularly in relation to the movement of shadows created by a rotating object. Participants are exploring how different motions affect the speed and direction of shadows on the ground.
Discussion Character
- Exploratory, Conceptual clarification, Assumption checking
Approaches and Questions Raised
- Participants are attempting to understand the relationship between circular motion and shadow movement, questioning which direction produces a moving shadow and whether certain motions do not create movement. Some suggest practical experiments to visualize the concepts.
Discussion Status
There are multiple interpretations being explored regarding the effects of motion on shadow movement. Some participants have offered guidance on conducting simple experiments to aid understanding, while others express difficulty in grasping the concepts presented.
Contextual Notes
Participants mention challenges in visualizing the motion and maintaining a constant rate of movement, which may affect their ability to conduct the suggested experiments effectively.
1. Homework Statement equations is not needed here
I have no idea :(
Please help me![/B]
- #2
TomHart
- 684
- 172
They are asking which shadow is moving the fastest on the ground. What direction of motion produces a moving shadow? Is there a direction of motion that does NOT produce a moving shadow? Maybe you could experiment by watching the shadow your hand makes if you place it directly beneath a source of light.
Edit: P.S. Welcome to Physics Forums.
Edit: P.S. Welcome to Physics Forums.
- #3
Sarina3003
- 20
- 0
Thanks for that. However, i don't quite follow you ;(
- #4
- 29,618
- 21,430
You need to be able to attempt the question yourself. We can help you when you get stuck.Sarina3003 said:
Tom has suggested you carry out a simple experiment. It's difficult to see why you can't do that. Do you have a lamp and a table? Can you move your hand in a circle?
Even if not, you should be able to imagine what happens using the diagram you posted.
- #5
- 42,886
- 10,521
Tom's suggested experiment is very easy. With a light overhead, rotate your arm in front of you so that your hand moves in a vertical circle at a constant rate. Watch the shadow. When the shadow is moving most slowly, what is yiur hand doing? What about when the shadow moves fastest?Sarina3003 said:
Edit,.. PeroK pipped me.
- #6
Sarina3003
- 20
- 0
Thank you. However it's really hard
to see by naked eyes and my hands could not move at a constant rate eithe. But i think it could be B because i have thought of simple harmonic motion :|. B is equilibrium postion and V is max there , not really relevant but that's the only thing that my brain could say to me :(
to see by naked eyes and my hands could not move at a constant rate eithe. But i think it could be B because i have thought of simple harmonic motion :|. B is equilibrium postion and V is max there , not really relevant but that's the only thing that my brain could say to me :(
- #7
- 42,886
- 10,521
Good reasoning. The horizontal component of motion is indeed SHM.Sarina3003 said:
- #8
Sarina3003
- 20
- 0
Thank you so much!
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