Impulse & Momentum: Solving Homework Problem

  • Thread starter Thread starter duperduperman
  • Start date Start date
  • Tags Tags
    Impulse Momentum
AI Thread Summary
The discussion revolves around a homework problem related to impulse and momentum, specifically focusing on the role of friction in the solution. The participant expresses confusion about how to incorporate friction into their calculations, despite having experience with similar problems. They clarify the difference between static friction (Us) and kinetic friction (Uk), noting that static friction applies when an object is stationary, while kinetic friction applies when it is in motion. The lack of clarity on friction's impact is a central issue in solving the problem. Understanding the distinction between static and kinetic friction is crucial for accurately applying the impulse-momentum equations.
duperduperman
Messages
1
Reaction score
0

Homework Statement



http://courses.washington.edu/mengr230/sp11/handout/n25_ImpulseMomentum.pdf
the problem at the bottom

Homework Equations



on the link

The Attempt at a Solution



I wrote out the equation and I don't really know where the friction factors in. I'm pretty much 100% lost on this. I've done a good amount of impulse and momentum problems but this one is stumping me.
 
Last edited by a moderator:
Physics news on Phys.org
duperduperman said:

I wrote out the equation and I don't really know where the friction factors in. I'm pretty much 100% lost on this. I've done a good amount of impulse and momentum problems but this one is stumping me.


The Uk is for kinetic friction and the Us is for static friction. Static friction is when it's not moving and kinetic friction is when it is moving.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Golf club 🏌️and ball ⛳ impulse problem
Replies
19
Views
2K
How to Calculate Impulse in a Momentum Problem?
Replies
6
Views
2K
Simple Concept Question Regarding Impulse and Momentum
Replies
4
Views
1K
Describing the translation and rotation of a square frame
Replies
3
Views
2K
Impulse and Momentum: Ball and cart connected by a cord
Replies
24
Views
3K
Application of angular impulse to a problem
Replies
7
Views
2K
What impulse must act on the bowling ball to stop it?
Replies
1
Views
2K
Analyzing an Angular Impulse Problem
Replies
12
Views
2K
Impulse imparted to A by B during collision
Replies
7
Views
4K
Change in Momentum of a Hockey Puck
Replies
3
Views
3K

Hot Threads

Recent Insights

Back
Top