### Don't let it fall

##### Score: 2 Points

For the system consisting of two blocks shown, the minimum horizontal force F is applied so that the block B doesn’t fall under gravity. The masses of A and B are 15 kg and 9 kg respectively. The horizontal surface is frictionless and the coefficient of friction between the two blocks is 0.25. What is the magnitude of F?
$g=10m/s^2$

Dynamics

#### Statistics

Tried 50

Solved 40

First Solve @Sultana1402