Is the limiting friction equal to the minimum force required to move a body?
The coefficient of static friction is defined as the ratio of limiting friction F to the normal reaction R Mu = F/R Limiting value of friction has a magnitude just equal enough to preserve equilibrium. To start motion you need a force at least equal to F But we have to note that there is also a force called the force of adhesion between the surfaces which is molecular in nature. So to overcome this you may have to apply a force a little greater than F to move the body.
