(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Three identical blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force F_vec. (Intro 1 figure) The magnitude of the tension in the string between blocks B and C is T = 3.00 N. Assume that each block has mass m = 0.400 kg

What is the magnitude F of the force?

What is the tension T:AB in the string between block A and block B?

2. Relevant equations

F=ma

3. The attempt at a solution

I am unsure of how to approach the first part of the problem. For the second part, since t is the only force acting this the block,

I have: T=ma

I solve for A from the first part of the equation where t is given as follows:

t=ma

3=.400a

a=3/.4

a=7.5 m/s^2

I plugged this into to solve for the other tension as follows:

t=ma

t=.4*7.5

t=3

Mastering physics is saying the tension and the acceleration is wrong. Where did I screw up?

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# Tension between 3 blocks

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