1) Compute the travel time ratio of the other objects to the hollow cylinder. 2) Discuss how the travel time ratio of solid cylinder to hollow cylinder have confirmed or contradicted the theoretical value. 3) Determine whether the billiard ball/racquetball is solid or hollow. 4) Discuss the object with the largest SEOM. 5) Discuss possible systematic errors in the measurement.

(1) Use the data in  Table R2 and error propagation rule to compute the travel time ratio (with  errors) of the other objects to the hollow cylinder  ? ℎ? . Fill in  Table R5 below. [6]  Table R5   Solid cylinder  Billiard ball  Racquetball  ? ? ℎ? ± ± ± (2) Discuss how the ratio of solid cylinder to hollow cylinder have confirmed or contradicted the  theoretical ratio in Eq. (8) in  Manual . Compute the % error and make discussions. [4]    (3) From the travel time ratio, please determine (i) whether the billiard ball is solid or hollow,  and (ii) whether the racquetball is solid or hollow. Write down your reasons. (The answer  can be uncertain if your measurements do not show enough information.) [4]

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PHYS2125 Physics Laboratory I ©2018 Kuei Sun The University of Texas at Dallas 5 (4) Which object in Table R2has the largest SEOM? Please discuss the reason for this relatively largeSEOM and how to improveit. [3]  (5) Please discuss  TWO possible systematic errors in the measurement. [3]    **Attach your calculation details. Use as many paper sheets as you need. Calculations that  demonstrate your understandings may gain you partial credit.  **Make sure your work-area and equipment are the same as they were before you leave.

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