Question:
A non-stop express elevator directly connects the observatory level at 80th floor of a tower with the podium at 2nd floor level. The tower has a uniform floor-floor height of 4 m. The elevator attains a maximum speed of 8 m/s. Assume 2 m/s2 as net vertical acceleration and net vertical deceleration (incorporating gravity). If the elevator starts from a state of rest from the podium, the time taken to reach the observatory, in seconds, is ________ (rounded off to one decimal place).
A non-stop express elevator directly connects the observatory level at 80th floor of a tower with the podium at 2nd floor level. The tower has a uniform floor-floor height of 4 m. The elevator attains a maximum speed of 8 m/s. Assume 2 m/s2 as net vertical acceleration and net vertical deceleration (incorporating gravity). If the elevator starts from a state of rest from the podium, the time taken to reach the observatory, in seconds, is ________ (rounded off to one decimal place).
Updated On: Jul 9, 2024
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Correct Answer: 42
Solution and Explanation
The correct answer is : 42 to 44
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