Question:
An elevator in a building can carry a maximum of 10 persons, with the average mass of each person being 68 $\mathrm{kg}$. The mass of the elevator itself is $920 \mathrm{~kg}$ and it moves with a constant speed of $3 \mathrm{~m} / \mathrm{s}$. The frictional force opposing the motion is $6000 \mathrm{~N}$. If the elevator is moving up with its full capacity, the power delivered by the motor to the elevator $\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)$ must be at least:
$56300 \mathrm{~W}$
$62360 \mathrm{~W}$
$48000 \mathrm{~W}$
$66000 \mathrm{~W}$
Question of from chapter.
JEE Main Previous Year 7 Jan. 2020
Correct Option: 4
Solution:
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