Calculating Coefficient of Friction in a Hockey Puck Sliding Problem

  • Thread starter Thread starter Peter Tran
  • Start date Start date
  • Tags Tags
    Friction
AI Thread Summary
To calculate the coefficient of friction (μ) for a hockey puck sliding on ice, the puck's initial speed is 8.30 m/s and it slides 25.0 m before stopping. The acceleration was determined to be 12.5 m/s² using the kinematic equation. The mass of the puck is not needed for the calculation, as it will cancel out when applying the friction equation f = μn. The normal force (n) can be represented as mg, allowing for the equation to be simplified. The key takeaway is that the mass can be treated as a variable that cancels, enabling the calculation of μ without needing its specific value.
Peter Tran
Messages
4
Reaction score
0

Homework Statement



A hockey puck leaves a player's stick with a speed of 8.30m/s and slides 25.0m before coming to rest.

Find the coefficient of friction between the puck and the ice.


Homework Equations



f=μn
F=ma
v^2=v_0^2+2a(x-x_0)

The Attempt at a Solution



So I've already figured out the acceleration of the puck using the third equation I listed, which came out to be 12.5m/s. Problem is, I can't figure out how to find the mass of the puck. Which I need to know in order to calculate the normal force. Even then, I would still have two variables since I don't know (f) or (μ) where I'm trying to find (μ).

Help please? :)
 
Physics news on Phys.org
Let the mass be represented by the variable, m. It will cancel out.
 

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 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is（Figure 2）： F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
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

Coefficient of friction between puck and ice
Replies
2
Views
3K
How to find the coefficient of kinetic friction
Replies
4
Views
3K
Collision problem: Two hockey pucks collide and stick together....
Replies
4
Views
2K
Hockey Puck Collision--momentum problem
Replies
2
Views
4K
Using the angular momentum principle for 2 pucks
Replies
3
Views
2K
How Far Will a Puck Slide with Friction?
Replies
3
Views
1K
Calculating Coefficient of Kinetic Friction for a Hockey Puck
Replies
3
Views
3K
How Do You Calculate the Momentum of a Puck After a Collision?
Replies
5
Views
3K
Calculate Kinetic Friction Coefficient for Hockey Puck on Ice
Replies
1
Views
4K
Collision of Hockey Pucks: Solving for Final Speed and Angle
Replies
35
Views
5K

Hot Threads

Recent Insights

Back
Top