A) \[{{\mu }_{k}}=1-\frac{1}{{{n}^{2}}}\]
B) \[{{\mu }_{k}}=\sqrt{1-\frac{1}{{{n}^{2}}}}\]
C) \[{{\mu }_{s}}=1-\frac{1}{{{n}^{2}}}\]
D) \[{{\mu }_{s}}=\sqrt{1-\frac{1}{{{n}^{2}}}}\]
Correct Answer: A
Solution :
[a] The situation is shown in figure when friction is absent, |
![]() |
![]() ![]() |
![]() |
When friction is present |
![]() |
![]() ![]() |
Whens![]() |
From Eqs. (i) and (ii), we get |
![]() ![]() |
(![]() ![]() |
or ![]() |
or ![]() |
or ![]() |
or ![]() ![]() |
You need to login to perform this action.
You will be redirected in
3 sec