Calculate the magnitude of the buoyant force Fb for all metal cylinders using equation (2). In that equation substitute Vo from Step 3 (in m3). 13. Multiply the mass in air of the hooked cylinder by 9.80 m/s 2 to get the weight in the air. Record this result Fg. Multiply the "apparent" mass by 9.80 m/s 2 to get the "apparent" weight. Record this result Fg apparent. 14. Calculate and record the buoyant force as the difference Fg -Fg apparent for all three metal cylinders. 15. Find the % Difference between Fb and Fg -Fg apparent for all three metal cylinders