Two forces, f1 and f2 (with f1 > f2), act on an object of mass m. the two forces act along the same line but in opposite directions. which formula gives the acceleration of the object due to these forces? a) (f1 – f2) / m b) (f1 + f2) / m c) m / (f1 + f2) d) m / (f1 - f2)

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