Including force in free body diagram

Click For Summary
A discussion on free body diagrams for a car parked on a hill highlights the forces acting on the vehicle. Participants agree that the three main forces are weight (Mg), friction, and the normal force. There is some confusion regarding a potential fourth force, but it is clarified that the car is at rest, implying no additional forces are acting. The consensus is that the three identified forces are sufficient for the diagram. Understanding these forces is crucial for accurately representing the car's state in physics problems.
luca131
Messages
6
Reaction score
0
Question
The number of forces acting on a car parked on a hill(with parking brakes engaged) is
Answers
1,2,3,4




When i drew the free body diagram, i got 4 but I am not sure if i should include a force
 
Physics news on Phys.org
Which four forces did you get? Which one don't you tihnk you should include?
 
i got Mg(weight),friction,normal force, and do i include force or there isn't one in this problem
 
Your three forces are correct. I'm not sure what you mean by the fourth force. The car is at rest remember!
 
o yea thank you
 

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
View full post »

Similar threads

Why are moments not included in free body diagrams?
  • · Replies 31 ·
2
Replies
31
Views
2K
Potential Mistake in Free-Body Diagram
  • · Replies 5 ·
Replies
5
Views
2K
Is it friction or tension acting on the person hanging on a rope?
  • · Replies 4 ·
Replies
4
Views
1K
When are reactive forces enough to support this body?
  • · Replies 14 ·
Replies
14
Views
1K
Solving Free-Body Diagrams for Moving Nuts on Rods: Tips and Techniques
  • · Replies 9 ·
Replies
9
Views
2K
Free Body Diagram of Mass-Spring System
  • · Replies 5 ·
Replies
5
Views
1K
Finding Radial Force from Free Body Diagram
  • · Replies 4 ·
Replies
4
Views
2K
Free body Diagram of a Plank resting on two Cylinders
  • · Replies 14 ·
Replies
14
Views
3K
What Causes Angular Acceleration and Torque in a Free Body Diagram?
  • · Replies 10 ·
Replies
10
Views
3K
Distributed weight of inclined beam.
  • · Replies 11 ·
Replies
11
Views
3K