Question 173: Laws of Motion

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

Accepted Answer

Assume weight of the block = $W$ and friction force = $f$ = $\mu N$
For the block to remain stationary with the wall, weight of the block should balanced by the force of friction.
$	herefore$ $f=W$
$ \Rightarrow $ $\mu N = W$
$ \Rightarrow $ $W$ = 0.2 $ 	imes $ 10 = 2 N

Answer

$20N$

Answer

$50N$

Answer

$100N$

Answer

$2N$

Laws of Motion

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

Choose the correct answer: