Finding Tension when Mass Accelerates

  • Thread starter Thread starter allielove13
  • Start date Start date
  • Tags Tags
    Mass Tension
Click For Summary

Homework Help Overview

The problem involves a mass of 0.500 kg attached to a cord at a 30-degree angle with the horizontal, which is being pulled along the ground without friction. The objective is to determine the tension in the cord while considering the forces acting on the mass.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss starting with the sum of forces in both the x and y directions, with references to the equations involving tension and gravitational force. There is also a question raised about whether the mass is moving at a constant speed, which implies no acceleration.

Discussion Status

The discussion is ongoing, with participants confirming the approach of analyzing forces in different directions. There is an exploration of the implications of constant speed versus acceleration, indicating a productive line of questioning.

Contextual Notes

Participants are considering the effects of friction and the conditions under which the mass is being pulled, as well as the implications of the angle of the cord on the forces involved.

allielove13
Messages
3
Reaction score
0

Homework Statement


A mass of .500 kg is resting on the ground. Attached is a cord that makes a 30-degree angle with the horizontal. It is found that when the cord is pulled tight enough, the mass will skip along the ground without friction. How much tension is in the cord?
348m6ts.jpg


Homework Equations


F=ma?
T-Fg=ma?


The Attempt at a Solution


I have no idea how to start this..
 
Physics news on Phys.org
Start with the sum of forces in the x and y direction.
 
kellenm said:
Start with the sum of forces in the x and y direction.

So [tex]\Sigma[/tex]Fx=Tcos30
and [tex]\Sigma[/tex]Fy=Tsin30-Fg
?
 
Yeah that's right. Is this at a constant speed? Meaning no acceleration?
 

Similar threads

  • · Replies 12 ·
Replies
12
Views
1K
  • · Replies 38 ·
2
Replies
38
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
6K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 9 ·
Replies
9
Views
6K
  • · Replies 3 ·
Replies
3
Views
3K