The coefficient of static friction between a wooden block of mass 0.5 kg and a vertical rough wall is 0.2. The magnitude of horizontal force that should be applied on the block to keep it adhere to the wall will be ______ N. [g = 10 ms-2]
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the correct answer is 25 N
Given:: \(\mu_s\) = 0.2
We know that \(f_s= \mu N\)
To keep the block adhere to the wall
here N = F ...(2)
fs = mg ....(3)
from equation (1), (2), and (3), we get
\(= mg=\mu F\)