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1. |
An open cylindrical vessel of 20 cm diameter and 100 cm long contains water up to a height of 80 cm. What will be the rotational speed of the vessel about its vertical axis such that no water spills? [ g = 10 m/s2] |
A. | 10√2 rad/s |
B. | 20√2 rad/s |
C. | 30√2 rad/s |
D. | 40√2 rad/s |
Answer» C. 30√2 rad/s | |