Vector Dynamics on an Inclined Plane

Click For Summary

Homework Help Overview

The discussion revolves around a physics problem involving vector dynamics on an inclined plane, specifically focusing on the forces acting on two blocks, one of which is moving up the incline while the other is descending. The original poster attempts to analyze the forces involved, particularly the applied and opposing forces.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants explore the net forces acting on each block, questioning the assumptions about the forces of gravity, tension, and friction. There is discussion about the implications of a zero net force in the context of the system's motion.

Discussion Status

The discussion is active, with participants engaging in clarifying the forces at play and questioning the original poster's assumptions. Some guidance has been offered regarding the need for force diagrams and the relationship between the forces acting on the blocks.

Contextual Notes

There is an indication of confusion regarding the roles of different forces, particularly in relation to the motion of the blocks and the conditions of equilibrium. The original poster's reference to a test question suggests constraints on the information available for analysis.

seiferseph
Messages
102
Reaction score
0
http://i2.photobucket.com/albums/y15/seiferseph/untitled.jpg

recently had this question on a test, we're told the left block moves up the incline at a constant rate. here's what i did

Fnet = Fappl - Fopp
Fnet = 0 because no acceleration

Fopp = Fappl

the applied force would only be the weight of the right one, and the opposing force would only be friction on the incline?
does the force weight of A (Fw for a times sin theta) also oppose the motion?
 
Last edited by a moderator:
Physics news on Phys.org
The net force on WHAT is zero? Do a force diagram for each block. The one on the right has a force of gravity pulling down and a force of tension pulling up, however it is sitll descending, which tells you something.
 
whozum said:
The net force on WHAT is zero? Do a force diagram for each block. The one on the right has a force of gravity pulling down and a force of tension pulling up, however it is sitll descending, which tells you something.

that is taking the system, since there is no accel the fnet if the system is zero, and the applied force is the weight of the hanging one. i was wondering what the opposing forces would be.
 
The right block (descending) has an et force of zero, which means the force of gravity pulling down equals the force of tension, pulling up. What's causing the force of tension? The other block, so what's the force on the other block...
 
just got it, thanks!
 

Similar threads

Finding the acceleration of a block on an inclined plane with friction
  • · Replies 2 ·
Replies
2
Views
1K
Newton's laws and inclined plane with friction
  • · Replies 8 ·
Replies
8
Views
664
Block on top of an inclined plane, with a rough surface, that moves with constant acceleration
  • · Replies 41 ·
2
Replies
41
Views
5K
Friction direction change in a inclined circular bend (car on a road)
  • · Replies 11 ·
Replies
11
Views
2K
Dynamics problem involving an inclined plane and Friction
  • · Replies 1 ·
Replies
1
Views
2K
Rope between inclines with maximum length of hanging middle portion
  • · Replies 46 ·
2
Replies
46
Views
8K
Block at rest on an inclined surface
  • · Replies 36 ·
2
Replies
36
Views
6K
Determining the angle while dealing with friction on an inclined plane
  • · Replies 8 ·
Replies
8
Views
4K
Which sphere reaches the bottom of the inclined plane first
  • · Replies 19 ·
Replies
19
Views
5K
Curvilinear Dynamics and forces
  • · Replies 9 ·
Replies
9
Views
3K