3) The mass of an object suspended in air is 20.0 g. When the object is then submerged in water, its measured mass is 17.5 g. Determine the specific gravity of the object. When the object is submerged in a certain liquid, its measured mass is 17.8 g. What is the specific gravity of the liquid? 4. Consider the Atwood machine used in the experiment: Each pan has a mass of 70 g. The right pan is made 10 g heavier than the left pan. It takes the right pan 2.0 s to descend from the top platform to the bottom platform 120 cm below. Compute the % error in the experimental value of the acceleration of the pans. The mass of the pulley is 80 g.

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