What is the amount of work done in moving the box from the bottom to t

Click For Summary

Homework Help Overview

The problem involves calculating the work done in moving a 160 Newton box up a 10 meter long frictionless inclined plane at a 30° angle. The box is moved with a constant speed, and the task is to determine the work done during this movement.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the initial attempt involving a formula for height and question the variables used, specifically "h" and "u". There is mention of using conservation of energy as a potential approach to solve the problem.

Discussion Status

The discussion reflects confusion regarding the problem's requirements and the variables involved. Some participants are exploring the relationship between work and energy changes, particularly questioning whether the box experiences any change in energy as it moves up the incline.

Contextual Notes

Participants express uncertainty about the problem setup and the definitions of terms used in their attempts. The lack of friction is noted as a relevant factor in the discussion.

TheLetterDex
Messages
2
Reaction score
0

Homework Statement



A 160 Newton box sits on a 10 meter long frictionless plane inclined at an angle of 30° to the horizontal as shown. Force (F) applied to a rope attached to the box causes the box to move with a constant speed up the incline.

Calculate the amount of work done in moving the box from the bottom to the top of the inclined plane.
_____ J


The Attempt at a Solution


So far i come up with h=u*t-0.5*g*t^2, but now sure where to go
 
Physics news on Phys.org
TheLetterDex said:
So far i come up with h=u*t-0.5*g*t^2, but now sure where to go

What is "h" and what is "u"?


There is a simple way to do this based on conservation of energy. None of the energy is lost to friction.
 
Nathanael said:
What is "h" and what is "u"?


There is a simple way to do this based on conservation of energy. None of the energy is lost to friction.

Yeah I am not sure where i was going with this very confused with the question
 
TheLetterDex said:
Yeah I am not sure where i was going with this very confused with the question

The problem says to find the work done.

Work is (or "causes") a change in energy.

Does the box change it's energy at all from the bottom of the incline to the top?
 

Similar threads

  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 8 ·
Replies
8
Views
2K
Replies
3
Views
3K
Replies
2
Views
1K
Replies
12
Views
3K
  • · Replies 11 ·
Replies
11
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
17
Views
2K