What is the angle of the rope in Physics 11 problem 10?

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    Physics Physics 11
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Homework Help Overview

The problem involves determining the angle at which a rope is held while pulling a sled with a specific force over a distance, given the work done. The context is within the subject area of physics, specifically relating to work and force vectors.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the equation for calculating the angle based on work, force, and distance. There is an attempt to clarify how to rearrange the equation to find the angle when it is not provided. Questions arise regarding the correctness of a proposed answer.

Discussion Status

The discussion is ongoing, with some participants providing equations and others questioning the validity of the proposed answer. There is a focus on ensuring the correct application of the formula without reaching a consensus on the final answer.

Contextual Notes

Participants are navigating the challenge of finding an angle based on given parameters, which may involve assumptions about the relationship between work, force, and distance. There is an emphasis on the need for clarity in the calculations presented.

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Homework Statement


An 845N sled is is pulled a distance of 185m. The taskt requires 1.20 x 10^4J of work and is done by pulling a rope with a force of 125N. At what angle is the rope held


Homework Equations


W=Cos(of theta) Fd


The Attempt at a Solution


F=845N
d=185m
W=1.20x10^4J
F=125N
angle=?

I know how to do this question if I am given an angle but i don't really know what to do when I am supposed to be finding the angle.
 
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theta = arccos(W/(F*d)) is how you'd find the angle given that eqn.
 
is the right answer 1.0 degrees?
 
Iceclover said:
is the right answer 1.0 degrees?
No. You were given the correct equation , please show how you arrived at your answer.
 

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