A motor rated with power P is used to lift an object of weight at constant speed to a height H in time t. The work done in lifting the box is W. A motor rated with power 2P is used to lift the same object to the same height H in time t 2 . The new work done in lifting the box is W 2. Which of the following claims correctly describes therelationships between the two times and two values of work done and is supported with appropriate reasoning? W 3
=W and t 3 W and t2