Solving Physics Problem: Calculate Frictional Force of 24 N

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Homework Help Overview

The discussion revolves around calculating the frictional force acting on a body moving on an inclined plane, given a force of 24 N and an acceleration of 3 m/s². The mass of the body is specified as 5 kg, but the angle of the incline and the direction of the applied force are not clearly defined.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between net force, applied force, and friction. One participant suggests a formula for net force while questioning the assumptions about the direction of the applied force and the incline's angle.

Discussion Status

Some participants have provided guidance on the need to consider additional forces acting on the body, such as the weight component due to the incline. There is an acknowledgment of potential errors in reasoning, and multiple interpretations of the problem setup are being explored.

Contextual Notes

The discussion highlights missing information regarding the angle of the incline and the direction of the applied force, which are crucial for accurately determining the frictional force.

Misr
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hi ,

1.A force of 24 N acts on a body causing its movement on an inclined plane with acceleration 3 m/s^2 . calculate the frictional force.



so can u illustrate the answer to me?

Thanks
 
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You will need to provide more information to allow us to help with this.
What is the mass in kg? The angle of the plane? The direction of the force?
 
You will need to provide more information to allow us to help with this.
What is the mass in kg? The angle of the plane? The direction of the force?

No , I just forgot to write the mass which is 5 Kg .This is the All of the Given information.
But for now i have a suggestion and all you have to do is to check w heather I'm right or not.

The net force acting on the system = The force causing the acceleration of the ball - Friction force
right??
well
Net force = 24 - Friction = (5*3)
Net force = 24 - Friction = 15
therefore friction force = 24 - 15 = 9 Newtons

Right??
Thanks in advance.
 
Misr said:
No , I just forgot to write the mass which is 5 Kg .This is the All of the Given information.
But for now i have a suggestion and all you have to do is to check w heather I'm right or not.

The net force acting on the system = The force causing the acceleration of the ball - Friction force
right??
well
Net force = 24 - Friction = (5*3)
Net force = 24 - Friction = 15
therefore friction force = 24 - 15 = 9 Newtons

Right??
Thanks in advance.
That looks good, provided that the applied 24 N force acts parallel to the plane. Since the problem does not specify that, I guess you'll have to assume it.
 
If the plane is inclined and the force acts parallel to it, the net force is not simply "24 - friction". The weight of the mass also has a component acting against the 24N.
 
Stonebridge said:
If the plane is inclined and the force acts parallel to it, the net force is not simply "24 - friction". The weight of the mass also has a component acting against the 24N.
Indeed it does, my error:redface:
 

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