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

The 10-Mg truck hauls the 20-Mg trailer. If the unit starts from rest on a level road with a tractive force f of 20 kN between the driving wheels of the truck and the road, compute the tension T in the horizontal drawbar and the acceleration a of the rig.

2. Relevant equations

Did i do my sum of forces correctly? If so, I have two unknowns and one equation. The sum of forces in the y - direction would not help. Do i use constant acceleration formulas? If so, i cant seem to figure out which one to use.

3. The attempt at a solution

F_x = ma_x

ma_x = T - f

[(20+10)*10^3]*a_x = T - 20,000

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# Homework Help: Dynamics - Newton's 2nd Law

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