A tugboat moves a barge at a constant power output
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A tugboat moves a barge at a constant power output. If the resistive force of water acting on the barge suddenly doubles while the power delivered by the tug remains the same, the steady speed of the barge will
(a) become 21 times its previous value
(b) remain unchanged
(c) become half of its previous value
(d) double