The following is not a law of static friction :

A)
The force of friction is dependent upon the area of contact
B)
The force of friction depends upon the roughness of the surface
C)
The force of friction always acts in a direction opposite to that in which the body tends to move
D)
The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces

Correct Answer :   The force of friction always acts in a direction opposite to that in which the body tends to move

Recently Updated in Applied Mechanics Questions
A geo-stationary satellite is one which orbits the earth with a velocity of rotation of____.
A)
earth
B)
sun
C)
moon
D)
None of the Above

Correct Answer : Option (A) :   earth

If two equal forces of magnitude P act at an angle θ, their resultant, will be____.
A)
P sin θ/2
B)
P cos θ/2
C)
2P sin θ/2
D)
2P cos θ/2

Correct Answer : Option (D) :   2P cos θ/2

Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by___.
A)
4.5 kg
B)
5.5 kg
C)
6.25 kg
D)
8.75 kg

Correct Answer : Option (D) :   8.75 kg

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