Coefficient of Kinetic Friction physics

AI Thread Summary
To find the coefficient of kinetic friction for the bank safe being pushed and pulled, the forces acting on it must be analyzed. The safe, weighing 300 kg, moves at a constant speed, indicating that the net force is zero. The total horizontal force applied is 385 N from Clyde and 350 N from Bonnie, leading to a combined force of 735 N. The frictional force opposing this motion equals the applied force, allowing the coefficient of kinetic friction to be calculated using the formula f_friction = μ_k * N, where N is the normal force. Understanding the relationship between constant velocity and friction is crucial for solving the problem accurately.
Chaoticsouls
Messages
1
Reaction score
0

Homework Statement


Physics problem - coefficient of friction? Bonnie and Clyde are sliding a 300 kg bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 385 N of force while Bonnie pulls foward on a rope with 350N of force. What is the safe's coefficient of kinetic friction of the bank floor?

Homework Equations


I'm guessing f=ma?

The Attempt at a Solution



2.0x10? What I did was use the formula and drew out the picture and tried to solve the problem. I ended up getting confused on which formula to use and how to go about solving it.
 
Physics news on Phys.org
Nope, that's not the correct formula. How would you find the coefficient of friction using a formula that doesn't even mention the coefficient of friction? There's a formula for the force due to friction that has something to do with the coefficient of friction. Look for that formula. Also, the problem mentions "constant velocity" - what do you know about constant velocity?
 
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 »
Thread 'A cylinder connected to a hanged mass'

Thread 'A cylinder connected to a hanged 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

Newton's Second Law (Pulley Sustem)
Replies
3
Views
2K
Does coefficient of kinetic friction depend on speed?
Replies
16
Views
5K
How to find the coefficient of kinetic friction
Replies
4
Views
3K
Calculate the coefficient of static & kinetic friction
Replies
8
Views
7K
Is it friction or tension acting on the person hanging on a rope?
Replies
4
Views
994
Acceleration of object with friction: Homework help
Replies
1
Views
2K
Calculating acceleration from the coefficient of kinetic friction
Replies
48
Views
8K
What is the Force of Kinetic Friction?
Replies
11
Views
1K
Calculating the coefficient of kinetic friction
Replies
3
Views
3K
What's the coefficient of kinetic friction?
Replies
8
Views
3K

Hot Threads

Recent Insights

Back
Top