Questions $1.$ If a string is attached instead of the spring scale in part I of the experiment, how does the tension in the string vary if the cylinder is slowly submerged into the liquid? $2.$ What do you expect the slope of the curve in part I if salt water is used instead of fresh water? $3.$ When using the scale to measure the mass of the cylinder in step $8,$ does it experience a buoyant force due to its immersion in air? If so$,$ approximate the magnitude of this buoyant force. $4.$ When using the scale to measure the submerged cylinder in step a$3,$ does it matter if the cylinder touches the bottom of the beaker in which it is submerged? How would such contact affect your measurement, if at all?