Pulling a Sled & Box up a Snowy Hill

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Homework Help Overview

The problem involves calculating the tension in a rope that pulls a sled and a box up a snowy hill, with specific weights and an incline angle provided. The context includes considerations of friction and the dynamics of the system.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the calculation of tension and express uncertainty about the necessary equations and coefficients for friction. Questions are raised regarding the slope of the rope, whether the sled is accelerating or moving at constant speed, and the relevance of friction in this scenario.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the problem statement and the assumptions involved. Some guidance has been offered regarding the need for additional information to proceed with the calculations.

Contextual Notes

There is a lack of clarity in the original problem statement, particularly concerning the full context of the tension calculation and the coefficients of friction. Participants are also unsure about the conditions of motion for the sled.

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Homework Statement


A rope attached to a 19.0kg wood sled pulls the sled up a 22.0 degree snow-covered hill. A 11.0 kg wood box rides on top of the sled.


Homework Equations


I have no what the equation may be, I was just doing some research and came across this website plus others and didn't give the formula just some numbers strung together but I attempted it below but I do not know if it is right. My problem also didn't give me the co-efficients of snow on snow and wood on wood so I also took these from previous problems I found on the internet I'm not sure if they are always constant or not.

The Attempt at a Solution


(19kg+11kg)(9.80m/s2)(0.5+0.06)cos22degrees)
(30kg)(9.80m/s2)(0.56)cos22degrees
=153N
 
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Wommbatt said:

Homework Statement


A rope attached to a 19.0kg wood sled pulls the sled up a 22.0 degree snow-covered hill. A 11.0 kg wood box rides on top of the sled.


Homework Equations


I have no what the equation may be, I was just doing some research and came across this website plus others and didn't give the formula just some numbers strung together but I attempted it below but I do not know if it is right. My problem also didn't give me the co-efficients of snow on snow and wood on wood so I also took these from previous problems I found on the internet I'm not sure if they are always constant or not.

The Attempt at a Solution


(19kg+11kg)(9.80m/s2)(0.5+0.06)cos22degrees)
(30kg)(9.80m/s2)(0.56)cos22degrees
=153N

No part of this post refers to what you are trying to calculate?
 


I'm trying to calculate the tension.
 


Wommbatt said:
I'm trying to calculate the tension.

You have not given enough information.

Is the rope parallel to the slope?

Is the sled accelerating or moving at constant speed?

And yes, is there any friction? - it should be minimal, that is why we use a sled on snow.
 


Wommbatt said:
I'm trying to calculate the tension.

Your title for this thread is:

If the tension in the rope steadily increases, at what value of the tension does the

That might be a problem statement, but perhaps you didn't notice it stops mid sentence.

Perhaps if you typed the full statement you put in the title [but title cuts off after a certain number of characters] it would be clearer.
 

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