# Kinetic friction help

1. Feb 17, 2009

### ceday

1. The problem statement, all variables and given/known data

A 2.00 kg steel block is at rest on a steel table. A horizontal string pulls on the block. The coefficient of kinetic friction of dry steel on steel is μk=.600

If the string tension is 16.0 N, what is the block's speed after moving 1.30 m?

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Feb 17, 2009

### LowlyPion

Welcome to PF.

How would you think to solve it?

3. Feb 17, 2009

### ceday

well i know that Fk = μkmg and f=ma

im just not sure what the force should be and if it will give me the right acceleration

4. Feb 17, 2009

### LowlyPion

Well what is the frictional resistance?

What force is applied by the string?

What is the net force then?

With the mass you have the acceleration.

And with acceleration you can figure the speed.

5. Feb 17, 2009

### ceday

net force = tension force of the rope - frictional force?

6. Feb 17, 2009

### ceday

got it! thanks for the tips

- chris