
#1
Apr3006, 09:02 PM

P: 20

Please help. I'm having difficulty with this problem. My book offers an answer but no explanation. Thanks for helping.
I have the answer if you guys want it. 



#2
Apr3006, 11:42 PM

P: 167

Note that the wave is moving to the right. Hence, translate the whole curve slightly to the right to determine where point P will eventually be.




#3
May106, 06:59 AM

P: 16

Yes, but doesn't each point on the wave maintain it's position in the positive x direction? It's only the y component of each point which changes. Anyone else have any idea?




#4
May106, 07:09 AM

Emeritus
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PF Gold
P: 9,789

High School Physics Question!~H 



#5
May106, 07:15 AM

P: 16

negative y hat




#6
May106, 07:17 AM

Emeritus
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PF Gold
P: 9,789

~H 



#7
May106, 07:20 AM

P: 16

word...i'm still new here i.e. learning the ropes. how could we mathematically solved this question?




#8
May106, 07:22 AM

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PF Gold
P: 9,789

~H 



#9
May106, 08:51 AM

P: 15,325

This question actually somewhat ambiguous, and as such the OP might get the wrong advice and answer.
Depending on how you interpret "point P", your answer will be different! a] Point P is a physical point on the rope. b] Point P is an imaginary point on the wave. Pizzasky interpreted it as a], but others interpreted it as b]. I'm am 99.9% certain a] is correct. So, yes, follow Kudos and Hoot's guidance. 



#10
May106, 08:59 AM

Emeritus
Sci Advisor
PF Gold
P: 9,789

~H 



#11
May106, 10:47 AM

P: 80

if the wave is going to the right, then shouldnt the answer be c?
...... maybe im missing something 



#12
May106, 11:13 AM

Emeritus
Sci Advisor
PF Gold
P: 9,789

~H 



#13
May106, 05:40 PM

P: 20

The answer key gives choice C.
Anyone care to explain? Thank you all. 



#14
May106, 06:10 PM

P: 15,325

OK. That clears up what they're asking. Point P is a physical point on the rope. Pretend it's a spot of paint.
Now, as the wave travels down the rope, how will that spot of paint move? Think of this: the rope is tied off the right side to a lamppost. Your friend is off to the left, holding the rope, waving it up and down, creating the wave. (Note that the rope does not actually go anywhere  he can wave all he wants, but the rope will remain in our field of vision). NOW what will the spot of paint do? 


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