Calculating Friction Force to Stop a Rolling Ball

Click For Summary
SUMMARY

The discussion focuses on calculating the friction force necessary to stop a rolling ball on a cement floor. Participants emphasize the relationship between kinetic force and friction force, asserting that the magnitude of the kinetic force equals the friction force required for deceleration. The conversation highlights the importance of knowing the ball's weight and speed to accurately determine the friction force needed to halt its motion.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Basic knowledge of friction coefficients
  • Familiarity with kinetic energy concepts
  • Ability to perform calculations involving force, mass, and acceleration
NEXT STEPS
  • Study the principles of Newton's second law of motion
  • Learn about the coefficient of friction for different surfaces
  • Explore kinetic energy and its relation to stopping distances
  • Investigate real-world applications of friction in sports and engineering
USEFUL FOR

Physics students, mechanical engineers, and anyone interested in understanding the dynamics of motion and friction in practical scenarios.

kristy_vincen
Messages
3
Reaction score
0
The question is BASICALLY: A ball is rolling on a cement floor (accelerating). Determine the friction force required to stop the ball.

Of course it gives you the weight and speed of the ball, and I believe i know the answer. I just want to check it.

If I figure out the magnitude of of kinetic force, would it not take the same amount of friction force to stop the ball? So the kinetic force = friction force?

Thank you
 
Physics news on Phys.org
welcome to pf!

hi kristy! welcome to pf! :smile:
kristy_vincen said:
The question is BASICALLY: A ball is rolling on a cement floor (accelerating). Determine the friction force required to stop the ball.

Of course it gives you the weight and speed of the ball …

uh-uh :redface: … please tell us the exact question
 

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

Friction force on a ball falling through a body of water
  • · Replies 9 ·
Replies
9
Views
1K
Why is the direction of kinetic/static friction up a ramp?
  • · Replies 7 ·
Replies
7
Views
1K
Friction and an object stopping
  • · Replies 12 ·
Replies
12
Views
3K
Horizontal impulse on a ball at rest on a plane (with friction)
  • · Replies 14 ·
Replies
14
Views
3K
A ball climbing a ramp while "rolling the wrong way"
  • · Replies 32 ·
2
Replies
32
Views
3K
How can we model a rolling truck on an incline using rotational motion analysis?
  • · Replies 24 ·
Replies
24
Views
3K
The Work of Friction: Explained in .32m
  • · Replies 8 ·
Replies
8
Views
2K
Calculating Theoretical Reaction Force of Ball Traveling in Semi-Circle
  • · Replies 43 ·
2
Replies
43
Views
4K
How can I determine the instant the block overcomes static friction?
  • · Replies 61 ·
3
Replies
61
Views
3K
Rolling without slipping problem
  • · Replies 42 ·
2
Replies
42
Views
3K