Question

Block $A$ of mass $4kg$ is to be kept at rest against a smooth vertical wall by applying a force $F$ as shown in fig. The force required is $(g=10m/s^2)$

• A. $40\sqrt{2}N$
• B. $20\sqrt{2}N$
• C. $10\sqrt{2}N$
• D. $15\sqrt{2}N$

Answer 1

The correct option is A $40\sqrt{2}N$

Hence (A) is correct option.