Tie 3 objects together, where is F greatest

[anthroxy]

If i tie a string to a object number one and tie a string between object two and three and then pull the first object so the others just follow. Where would the force be greatest between me and the first or between the 2nd and the 3rd object or if it is the same at both places?

I have gone around wondering about this for quite sometime is there anyone can explain which it is and why?

 

[Redbelly98]

The first string is pulling on the combined mass of all three objects, while the last string pulls on just the mass of one (the third) object.

From the famous equation F = m·a, the greatest force is in the string pulling on the greatest total amount of mass.

 

[anthroxy]

So the first has the greatest force, ah yeah that makes perfect sense thanks a lot good explanation!