Question

Three blocks are kept stationary over one another as shown in the figure. A horizontal force of $20N$ is acting on the middle block as shown in the figure. Choose the incorrect statement.

• A. The acceleration of lowest block will be $4.5m/s^2$
• B. The acceleration of uppermost block will be $2m/s^2$
• C. The frictional force between middle and lower block will be $12N$
• D. The frictional force between middle and upper block will be $2N$.

Answer 1

Answer: (A), (C)

The correct options are
A The acceleration of lowest block will be $4.5m/s^2$
C The frictional force between middle and lower block will be $12N$