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Final_S05

# Final_S05 - NAME Recitation Instructor Physics 112...

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NAME 2 I. SHORT ANSWER [50 points] Please write your answers in the spaces provided. 1. [15 points] A solid block hanging from scale #1 is completely immersed under water in a beaker, without touching the bottom or sides of the beaker. Scale #1 reads 6 N, and scale #2 reads 20 N. (a) [3 points] Draw a carefully labeled free-body diagram for the block. For each force, please identify the body providing it . (b) [4 points] Draw a carefully labeled free-body diagram for the beaker + water, showing only external forces on this combination. For each force, please identify the body providing it . (c) [2 points] Identify any and all pairs of 3rd Law interaction partners among the forces in parts (a) and (b). If there are no such pairs, please write NONE. [Problem CONTINUES on next page] #1 #2 Water
NAME 3 (d) [2 points] Now scale #1 and the block are raised up so the block is hanging completely out of the water. The new reading on scale #1 is 8 N. What is scale #2's new reading ? Answer: (e) [1 point] The block is removed from scale #1 and placed in a dish of negligible (zero) weight. The dish + block float at the top of the water in the beaker. Now what is the reading on scale #2? Answer: (f) [1 point] How does the height of the water level in the beaker now (part e) compare with the height of the original water level before when the block was completely immersed in the water while hanging from scale #1 (part a)?

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Final_S05 - NAME Recitation Instructor Physics 112...

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