The greatest increase in the inertia of an object would be produced by increasing the
(1)mass of the object from 1.0 kg to 2.0 kg
(2)net force applied to the object from 1.0 n to 2.0 n
(3)time that a net force is applied to the object from 1.0 s to 2.0 s
(4)speed of the object from 1.0 m/s to 2.0 m/s

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel