Tension in string when block accelerates with the car at 3 m/s²

[haruspex]

So T-150=30 multiplied by6
T=330 N

You got it. Sleep well.

 

[gracy]

"haruspex" and BVU bigThanks for all your answers .And BVU sorry for that question mark

 

[gracy]

You both are true homework helper.BVU you used the whiteboard so nicely.Very neat diagram
.Next time when Calculus master will visit physics forum,will get homework done.

 

[gracy]

if the acceleration of the block = 2 * truck acceleration, then the force required in the string = m * a
then add the friction force

Really fast service ,I got this after 88 you in 10 th post.