A tugboat pulls a barge along a canal with a steady horizontal force of
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A tugboat pulls a barge along a canal with a steady horizontal force of 30kN. The engine of the tug develops a constant power of 90kW.
(i) Find the constant speed with which the barge can be towed. Give your answer in ms−1.
(ii) The canal stretch to be covered is 4.5km. Calculate the time taken to complete this journey at the speed found in part (i).
(iii) Determine the total work done by the tug on the barge during this journey.