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. 2 N
• B. 20 N
• C. 50 N
• D. 100 N

Answer 1

Answer: (A)

2 N

Answer 2

For equilibrium

Weight (W) = Force of friction (F)

$W = \mu R = 0.2 \times 10$= 2N