3. Assume the Sraduiteca olonSl 3. Assume the graduated cylinder shown in FIGURE

Question

3. Assume the Sraduiteca olonSl 3. Assume the graduated cylinder shown in FIGURE 4 was resting on another scale as shown in FIGURE 5 triple beam balance suspended cylinder support rod and base graduated cylinder second scale FIGURE 5: Experimental setup with the graduated cylinder resting on top of a second scale. (a) Would the second scale reading increase, decrease, or remain the same as one of the aluminum cylinders used in this experiment was submerged into the water? If it increases or decreases, by how much would the second scale reading change? Explain. CHINT: You can explain using Newton's 3nd Law of Motion.)

Explanation / Answer

a) The second scale shows us tension in wire + any otherbuoyant force which acts on the cylinder (from third law) Hecne, on submerging the cylinder in water, there is no change in the value shown by the second scale
b) If string broke, and aluminium cylinder is submerged in water, again there would be no change in reading of second scale as bupoyant force + apparent weight both will casue the seond scale to show a reading
c) In this case, due to spilling some water is lost and hence the reading of second scale redces proportiaonally to the weight of the water lost .

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