Calculating the Speed of a 4m Ladder Sliding Down a Wall

Click For Summary

Homework Help Overview

The discussion revolves around a problem involving a 4m ladder sliding down a wall, specifically focusing on the relationship between the distance of the ladder's base from the wall and the speed at which the top of the ladder descends. The subject area includes concepts from geometry and related rates.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relationships between the lengths involved, suggesting the use of the Pythagorean theorem to connect the distances. There are inquiries about visualizing the problem and whether a diagram has been drawn to aid understanding.

Discussion Status

The conversation includes attempts to clarify the problem and explore the underlying concepts. Some participants express frustration with their understanding, while others encourage the original poster to engage with the problem more deeply. There is no explicit consensus, but guidance on considering geometric relationships has been offered.

Contextual Notes

Participants note the nature of the question as a homework problem, with some expressing concern about the appropriateness of seeking help in this context. There is an acknowledgment of the original poster's struggle with the concepts involved.

dcgirl16
Messages
27
Reaction score
0
a ladder 4m long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a speed of 30cm/s. How quickly is the top of the ladder sliding down the wall when the bottom of the ladder is 2m from the wall.
 
Physics news on Phys.org
I think homework questions are supposed to be in the homework section (and this is definitely a homework question).

However, your best bet would be to write down any relationship you can find between the distance from the wall of the bottom of the ladder, the height of the top of the ladder, and the length of the ladder
 
At least show some work? Have you drawn a picture? Do you see a triangle in the picture? Does the Pythagorean theorem sound like a good way of connecting the various lengths in the picture?
 
if i knew how to do this i wouldn't be on this site, yeah it is a hwk question but its a general question that pretty much sums up everything i don't know. its not like I am using this to try and get you to do my hwk for me its so i can understand how to do it.
 
dcgirl16 said:
if i knew how to do this i wouldn't be on this site, yeah it is a hwk question but its a general question that pretty much sums up everything i don't know. its not like I am using this to try and get you to do my hwk for me its so i can understand how to do it.

But, if I told you the answer, then you still wouldn't know how to do it would you? Can you answer any of the points that HallsofIvy made?
 

Similar threads

Replies
5
Views
2K
Replies
1
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 11 ·
Replies
11
Views
8K
Replies
6
Views
3K
  • · Replies 5 ·
Replies
5
Views
4K
  • · Replies 4 ·
Replies
4
Views
3K
Replies
2
Views
4K