Let F, F N and f denote the magnitudes of the contact force, normal force and the friction exerted by one surface on the other kept in contact. If none of these is zero,

Question

Philoid · Accepted Answer

By looking at the diagram shown above, we can write

And

So option (A) and (B) are true

are always less than F so the difference between and will always be less than f hence option (D) is also correct.

Since we know that generally μ <1 and also f= μ. This implies f<. But this is not always true because the value of μ can be greater than one. Hence option (C) is not correct.

Let F, FN and f denote the magnitudes of the contact force, normal force and the friction exerted by one surface on the other kept in contact. If none of these is zero,

Let F, F_N and f denote the magnitudes of the contact force, normal force and the friction exerted by one surface on the other kept in contact. If none of these is zero,