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 [AIEEE 2003] |
A) 20 N
B) 50 N
C) 100 N
D) 2 N
Correct Answer: D
Solution :
[d] Let R be the normal contact force by wall on the block |
R = 10N, \[{{f}_{L}}\] = w and \[f=\mu R\] |
For vertical equilibrium of the block, |
\[\mu R=w\] |
\[\Rightarrow \] \[w=0.2\times 10=2\,N\] |
You need to login to perform this action.
You will be redirected in
3 sec