Given mass, force, and acceleration solve for the coefficient of friction

AI Thread Summary
To solve for the coefficient of friction, the frictional force must first be determined using Newton's second law. Given a force of 40.0 N and an acceleration of 6.0 m/s² for a 5.0-kg block, the net force can be calculated. The frictional force is found by subtracting the net force from the applied force. The coefficient of friction is then calculated using the formula u = Ff/mg, where Ff is the frictional force, m is the mass, and g is the acceleration due to gravity. It is essential to ensure all forces are accurately accounted for in the calculations.
michaelstanle
Messages
1
Reaction score
0

Homework Statement


A force of 40.0N accelerates a 5.0-kg block at 6.0M/s^2 along a horizontal surface.
a. What is the frictional force?
b. What is the coefficient of friction?

Homework Equations



u= coefficient of friction
m= mass of object
Ff= friction force
g= gravity

u=Ff/mg

The Attempt at a Solution


I used u=Ff/mg and i got 1.3 for the u. but that is when i used the given acceleration of 6.0 m/s^2, not gravity. is that correct?
 
Physics news on Phys.org
Did you draw a free body diagram?
You are missing a very important equation.
Did you calculate the friction force?
 
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 »

Similar threads

Mechanical Physics: Coefficient of Friction
Replies
20
Views
3K
Angular velocity- A toy train rolls around a horizontal track
Replies
8
Views
748
Static Friction Between a Box and the Floor
Replies
11
Views
3K
Finding the work done by a block
Replies
4
Views
3K
Calculation of Box's Acceleration on a Trailer with Friction
Replies
9
Views
1K
Normal force at the base of a ladder
Replies
20
Views
2K
Coefficient of Friction when Normal Force is Reduced [HS]
Replies
5
Views
2K
Friction Coefficients: Determining Force Direction?
Replies
6
Views
1K
Coefficient of kinetic friction of a block sliding across the ceiling
Replies
7
Views
1K
Determining Coefficient of Friction for Two Boxes with Applied Force
Replies
14
Views
2K

Hot Threads

Recent Insights

Back
Top