In Fig. 6-13, horizontal force Fl of magnitUde 10 N is

QUESTION:

In Fig. 6-13, horizontal force Fl of magnitUde 10 N is applied to a box on a floor, but the box does not slide. Then, as the magnitUde of vertical force F2 is increased from zero, do the following quantities increase, decrease, or stay the same: (a) the magnitUde of the frictional force 1s on the box; (b) the magnitude of the normal force FN on the box from the floor; (c) the maximum value Is.max of QUESTIONS 129 related to the relative speed v by an experimentally determined drag coefficient C according to (6-14) where p is the fluid density (mass per unit volume) and A is the effective cross-sectional area of the body (the area of a cross section taken perpendicular to the relative velocity v). Terminal Speed When a blunt object has fallen far enough through air, the magnitudes of the drag force J5 and the gravitational force l{ on the body become equal. The body then falls at a constant terminal speed VI given by f2F; VI = 'VcpA"' (6-16) Uniform Circular Motion If a particle moves in a circle or a circular arc of radius R at constant speed v, the particle is said to be in uniform circular motion. It then has a centripetal acceleration a with magnitude given by (6-17) This acceleration is due to a net centripetal force on the particle, with magnitude given by mv 2 F= R' (6-18) where 111 is the particle's mass. The vector quantities a and F are directed toward the center of curvature of the particle's path. the magnitude of the static frictional force on the box? (d) Does the box eventually slide?