Find acceleration and centripetal force

AI Thread Summary
The discussion focuses on determining the rate at which the direction of an object's velocity changes, specifically in relation to centripetal force, which is defined as v^2/r. Participants express confusion about the lack of a radius (r) since the objects do not move in a circle or at uniform speed. Clarification is provided that the red plot represents acceleration, while the blue indicates motion. The conversation highlights the importance of analyzing acceleration orthogonal to the direction of motion for understanding changes in velocity. Overall, the thread emphasizes the complexities of analyzing non-uniform motion in two dimensions.
isukatphysics69
Messages
453
Reaction score
8

Homework Statement


Rank the rate at which the direction of each object's velocity is changing, greatest first.

Homework Equations


n/a

The Attempt at a Solution


I know a centripetal = v^2/r, but i don't have r so i am not sure if i am supposed to just eyeball it and draw a reference circle or not..
 

Attachments

  • curve.jpg
    curve.jpg
    56 KB · Views: 599
Physics news on Phys.org
The objects don't move on a circle, and they don't move at uniform speed either.

What is plotted here? Two spatial dimensions? Blue is the motion I guess. Can you figure out what red is?
 
mfb said:
The objects don't move on a circle, and they don't move at uniform speed either.

What is plotted here? Two spatial dimensions? Blue is the motion I guess. Can you figure out what red is?
Red is acceleration here I'm sorry i forgot to mention
 
mfb said:
The objects don't move on a circle, and they don't move at uniform speed either.

What is plotted here? Two spatial dimensions? Blue is the motion I guess. Can you figure out what red is?
i already submitted the assignment, i still have another physics homework and a physics test tomorrow and i am very stressed >=[

submitted that assignment with the wrong answer
 
isukatphysics69 said:
Red is acceleration
Okay (although it looks odd in (b), there should be an acceleration).
For the change in direction the acceleration along the direction of motion does not matter. Can you find the acceleration orthogonal to it?
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »

Similar threads

Uniform Circular Motion: Tension Force at Top of Circle
Replies
4
Views
1K
Is My Calculation of Centripetal Acceleration and Tangential Velocity Correct?
Replies
12
Views
1K
How is centripetal force involved here? (charged mass sliding down a conducting hemisphere)
Replies
31
Views
1K
Centripetal force throughout a vertical circle
Replies
9
Views
4K
What actually is the centripetal acceleration formula?
Replies
28
Views
3K
Acceleration in uniform circular motion is uniform or non-uniform?
2
Replies
55
Views
3K
Find tangential velocity given radius and the coefficient of friction
Replies
3
Views
3K
Gravitation sum related to Centripetal Acceleration
Replies
5
Views
3K
Definition of centripetal force
Replies
3
Views
1K
Three conceptual questions on centripetal acceleration in a cone
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top