A construction crane lifts three identical concrete slabs
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A construction crane lifts three identical concrete slabs, each requiring 2.0kJ of work, to the roof of a building in a single uninterrupted operation lasting 30s.
(i) Find the total work done by the crane during the operation.
(ii) Calculate the average power developed by the crane in watts.
(iii) Express the power obtained in part (ii) in kilowatts.