How Far Do Dishes Move During a Tablecloth Trick?

AI Thread Summary
To determine how far dishes move during a tablecloth trick, one can use the coefficient of kinetic friction (0.12) and the time duration (0.25 seconds) to calculate acceleration. A free body diagram can help visualize the forces acting on the dishes, allowing for the application of Newton's laws. Importantly, the mass of the dishes is not necessary for solving the problem, as acceleration can be derived from the frictional force. Once acceleration is known, the distance traveled can be calculated. The key takeaway is that understanding the forces involved simplifies the solution process.
bhatch1
Messages
2
Reaction score
0

Homework Statement



A magician pulls a tablecloth from under some dishes, how far do the dishes move during the.25s it takes the table cloth out? Coefficient of kinetic friction=0.12 and time=.25s I can't find the solution to this prob. in fact I don't know where to start because I don't have mass or weight.

Homework Equations





3. The Attempt at a Solution
 
Physics news on Phys.org
bhatch1 said:

Homework Statement



A magician pulls a tablecloth from under some dishes, how far do the dishes move during the.25s it takes the table cloth out? Coefficient of kinetic friction=0.12 and time=.25s I can't find the solution to this prob. in fact I don't know where to start because I don't have mass or weight.

Homework Equations





3. The Attempt at a Solution
Try drawing a free body diagram of the forces acting on the dishes. By applying Newton's laws, you may find that you don't need to know the mass.
 
Thanks you I figured it out all I needed was acceleration, and then then I found the distance.
 

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

How Far Do Dishes Move in the Tablecloth Trick?
Replies
4
Views
9K
Solve Tablecloth Trick Homework Statement
Replies
4
Views
7K
Question(s) Regarding Magnitude of Force (Window Washer Problem)
Replies
3
Views
1K
[Rotational dynamics] cube sliding on a dish
Replies
5
Views
2K
Inclined Plane Problem with Kinetic Friction
Replies
3
Views
2K
How to find the coefficient of kinetic friction
Replies
4
Views
3K
Motion when Kinetic Friction is more than Static Friction
Replies
10
Views
2K
How Long Can You Pull a Tablecloth Before a Glass Falls Off?
Replies
1
Views
3K
Static friction vs kinetic friction in Tablecloth trick
Replies
6
Views
4K
Work of a object moving across surfaces with different friction
Replies
3
Views
1K

Hot Threads

Recent Insights

Back
Top