Three identical blocks, each having a mass `M`, are pushed by a force `F` on a frictionless table as shown in (figure) What is the acceleration of the blocks? What is net force on block `A`? What force does `A` apply on `B`? What force does `B` apply on `C`? show action reaction pairs on the contact surface of the blocks.

Explanation

If a is the common acceleration then ` F = 3 M xx a or a = (F)/(3M) `
Net force on block A ,
` = F_(1) = 3 Mxx (F)/(M) = (2F)/(3) `
Force applied by B on C
` = F_(3) = M xx a = M xx (F)/(3M) = F // 3 `
The action forces are shown in .
` (##PR_XI_V01_C03_S01_084_S01##) ` .