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A box of mass 400 kg is supported on a spring scale on the floor of a goods Ilft. The is 1900 kg. The lift is travelling from the 20th floor to the ground floor. At an instant when the deceleration of the lift is 1.2 ms as it approaches the ground floor, what is the readi oolo?

A box of mass 400 kg is supported on a spring scale on the floor of a goods Ilft. The is 1900 kg. The lift is travelling from the 20th floor to the ground floor. At an instant when the deceleration of the lift is 1.2 ms as it approaches the ground floor, what is the readi oolo?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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O 4. Moves downward at constant speed. QUESTION 20 A box of mass 400 kg is supported on a spring scale on the floor of a goods lift. The mass of the lift is 1900 kg. The lift is travelling from the 20th floor to the ground floor. At an instant when the deceleration of the lift is 1.2 ms 2 as it approaches the ground floor, what is the reading recorded by the scale? O 1.351 kg O 2.387 kg O 3.449 kg O 4.461 kg Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Transcribed Image Text:O 4. Moves downward at constant speed. QUESTION 20 A box of mass 400 kg is supported on a spring scale on the floor of a goods lift. The mass of the lift is 1900 kg. The lift is travelling from the 20th floor to the ground floor. At an instant when the deceleration of the lift is 1.2 ms 2 as it approaches the ground floor, what is the reading recorded by the scale? O 1.351 kg O 2.387 kg O 3.449 kg O 4.461 kg Click Save and Submit to save and submit. Click Save All Answers to save all answers.
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