# Homework Help: Explain me this concept (Laws of Motion)

1. Apr 9, 2010

### snshusat161

Two blocks placed one on top of the other are lying on a horizontal smooth surface. The coefficient of friction between the blocks is $$\mu$$.

Case 1: Horizontal force F is applied to the lower block (Fig. 14).

[PLAIN]http://www.monbattle.com/1.jpg[/CENTER] [Broken]

Please help me to find out how they have got those equations. I'm trying to find it from past several hours but couldn't got any hint.​

Last edited by a moderator: May 4, 2017
2. Apr 9, 2010

### tiny-tim

Hi snshusat161!