A miniature electric motor in a school project lifts a lightweight model elevator.
PHYSICS · Multi-part · CBSE · Physics · Work and Energy · Work and Energy
Problem
A miniature electric motor in a school project lifts a lightweight model elevator.
(i) The motor does 4500mJ of work in 15s. Convert the work done into joules.
(ii) Using the value obtained in part (i), calculate the power developed by the motor.
(iii) If the motor continues to run at the same power for an additional 2min, how much extra work will it perform? Express your answer in joules.