Is the F Pointing to the Right Friction or Force of the Truck Accelerating?

In summary, the conversation is discussing a free body diagram and the direction of the friction and normal forces on a cabinet being pulled by a truck. The force of the truck accelerating is discussed as well as the line of action of the normal force and its relationship to the acceleration of the center of mass. The summary concludes that the normal force must have a non-zero moment about a certain point due to the acceleration of the center of mass.
  • #1
xzibition8612
142
0

Homework Statement



See attachment.

Homework Equations





The Attempt at a Solution



My only question concerns the free body diagram. In the attachment, is the F pointing to the right friction or force of the truck accelerating? Why is the line of action of N not go through the mass center? And shouldn't friction for the cabinet point toward the left since a force is pulling it right?
I'm very confused about this.
Any help is appreciated thanks.
 

Attachments

  • aer 001.jpg
    aer 001.jpg
    26.9 KB · Views: 413
Physics news on Phys.org
  • #2
hi xzibition8612! :smile:
xzibition8612 said:
In the attachment, is the F pointing to the right friction or force of the truck accelerating?

both

the only horizontal force on the cabinet is the friction force :wink:
And shouldn't friction for the cabinet point toward the left since a force is pulling it right?

see above :rolleyes:
Why is the line of action of N not go through the mass center?

take moments about the point below the centre of mass …

the centre of mass is accelerating, so there's a non-zero moment of acceleration about that point, which show that the normal force must also have a non-zero moment
 

FAQ: Is the F Pointing to the Right Friction or Force of the Truck Accelerating?

1. What is FBD and why is it important in science?

FBD stands for Free Body Diagram, which is a visual representation of all the forces acting on a particular object. It is important in science because it helps us understand and analyze the motion and stability of objects.

2. How does friction impact the movement of objects?

Friction is a force that opposes the motion of objects, making it more difficult for them to move. It can either slow down or stop the movement of objects, depending on the strength of the frictional force.

3. What factors affect the amount of friction between two surfaces?

The amount of friction between two surfaces is affected by the type of surfaces, the amount of force applied, and the roughness of the surfaces. Additionally, the presence of lubricants or other substances can also impact the amount of friction.

4. How does the placement of forces affect the stability of an object?

The placement of forces on an object can greatly impact its stability. If the forces are balanced and evenly distributed, the object will remain stable. However, if the forces are uneven or unbalanced, the object may tip or fall over.

5. Can the placement of forces be changed to alter the motion of an object?

Yes, the placement of forces can be changed to alter the motion of an object. By changing the direction or magnitude of the forces, the object's motion can be redirected or accelerated in a particular direction.

Back
Top