Question

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.

Answer 1

Answer:

Let F,F

N

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

This question has multiple correct options

HARD

Share

Study later

ANSWER

f=μF

n

(μ<1)

f<F

n

F=

F

n

2

+f

2

F

2

=F

n

2

+f

2

ThereforeF>F

n

&F>f

(F

n

−f)

2

=F

n

2

+f

2

−2F

n

f<F

n

2

+f

2

=F

2

(F

n

+f)

2

=F

n

2

+f

2

+2F

n

f>F

n

2

+f

2

=F

2

Therefore,

(F

n

−f)

2

<F

2

<(F

n

+f)

2

(F

n

−f)<F<(F

n

+f)

All option are currect.