Applied Mechanics and Graphic Statics
‘P’ is the force acting on a body whose mass is ‘m’ and acceleration is ‘f’. The equation P - mf= 0, is known as

Equation of statics
None of these
Equation of dynamic equilibrium
Equation of dynamics

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Applied Mechanics and Graphic Statics
The following is not a law of static friction:

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

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