Help!! A 500-N box is at rest on the floor. Dennis Elbo makes several
attempts to move the box, pushing against the box with varying
amounts of horizontal force. Yet the box never does move. In this
situation, the amount of static friction force experienced by the box
Select all that apply.
O is 500 N
O is equal to the force with which Dennis exerts on the box
has an upper limit and Dennis has not yet exceeded the upper limit
is always the coefficient of friction multiplied by the normal force value