A stone of mass 3 kg is dropped into a water tank. The stone has negligible speed when entering the water surface and takes 3 seconds to sink to the bottom. While sinking, the resistance of the water is 9N. The acceleration of the stone and the height of water column are respectively : O 1.6.81 ms 2, 30.64 m O 2. 9.81 ms 2, 44.1 m O 3.(-) 9.81 ms2, 44.1 m O 4.12.81 ms-2, 57.6 m

A stone of mass 3 kg is dropped into a water tank. The stone has negligible speed when entering the water surface and takes 3 seconds to sink to the bottom. While sinking, the resistance of the water is 9N. The acceleration of the stone and the height of water column are respectively : O 1.6.81 ms 2, 30.64 m O 2. 9.81 ms 2, 44.1 m O 3.(-) 9.81 ms2, 44.1 m O 4.12.81 ms-2, 57.6 m

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

A stone of mass 3 kg is dropped into a water tank. The stone has negligible speed when entering the water surface and takes 3
seconds to sink to the bottom. While sinking, the resistance of the water is 9N. The acceleration of the stone and the height of water
column are respectively:
O 1.6.81 ms 2, 30.64 m
O 2. 9.81 ms¯4, 44.1 m
O 3. (-) 9.81 ms Z, 44.1 m
O 4. 12.81 ms¯2, 57.6 m

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