On a smooth horizontal surface a block
A of mass
10 kg is kept. On this block a second block
B of mass
5 kg is kept. The coefficient of friction between the two blocks is
0.4. A horizontal force of
30 N is applied on the lower block as shown. The force of friction between the blocks is (take
g=10 m/s2).
![1070740_f6672c2692e8435da2178db54a595c69.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/1070740_f6672c2692e8435da2178db54a595c69.png)