# Tension of a string between 2 blocks of equal mass on a flat surface

1. Dec 12, 2012

### livereater

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

What is the tension of a string between 2 blocks of equal mass that are moving due to a pull of 17 Newtons?[PLAIN]http://postimage.org/image/pmoibsy4p/ [Broken][/PLAIN]

A. 8.5
B. 0
C. 17
D. 25

2. Relevant equations

F=ma

3. The attempt at a solution

17

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

2. Relevant equations

3. The attempt at a solution

Last edited by a moderator: May 6, 2017
2. Dec 13, 2012

### WillemBouwer

Attempt at a solution is not just 17... haha... Show your equations that you used, so we can help you... Did you draw your FBD's for the 2 masses?

3. Dec 13, 2012

### WillemBouwer

Very easy once you have done the equations for both the masses...

4. Dec 13, 2012

### Bill Nye Tho

This is a very straight forward problem.

Newton's Second Law!

If you draw a free body diagram of each block you will have:

ƩFBLOCK1=ma

FPULL - T = ma

ƩFBLOCK2=ma

T = ma

----

You are given that the masses are equal to each other and the system will accelerate at the same rate!

5. Dec 13, 2012

### WillemBouwer

Yes Bill Nye Tho, for you it is very easy, but the purpose of this forum is to help people understand what they deal with by letting them do the problem themself, we just aid them when they struggle... Try helping not just showing that you know the answer...