The following four objects sit on a table on earth. which experiences the greatest normal force from the table?
a. a book weighing 2 n
b. a mug with a mass of 250 g
c. a metal pen with a mass of 0.3 kg
d. a calculator experiencing a gravitational force of 3.5 kg m/s2

The safe load, l, of a wooden beam of width w, height h, and length l, supported at both ends, varies directly as the product of the width and the square of the height, and inversely as the length. a wooden beam 4 inches wide, 9 inches high, and 240 inches long can hold a load of 6810 pounds. what load would a beam 3 inches wide, 8 inches high, and 144 inches long, of the same material, support? (round off your answer to the nearest integer.)