JEE · NEET Previous Year Question
An elevator in a building can carry a maximum of persons, with the average mass of each person being . The mass of the elevator itself is and it moves with a constant speed of . The frictional force opposing the motion is . If the elevator is moving up with its full capacity, the power delivered by the motor to the elevator must be at least:
Topic: JEE PYQ
Answer: A. Full step-by-step solution below.
- A
- B
- C
- D
Correct answer: A
Solution
(a) JEE Main 2020Net force on motor will be
So, required power for motor
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