Question

A horizontal force of $10\, N$ is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is $0.2$. The weight of the block is

• A. $20\, N$
• B. $50\, N$
• C. $100\, N$
• D. $2\, N$

Answer 1

Answer: (D)

$2\, N$

Answer 2

Weight of the block $= ?R = 0.2 ? 10 = 2N.$