An electric motor is used to lift a cargo container of weight $G\,$ to a storage platform at a height $h\,$ using two different transport mechanisms:

Mechanism 1 (Vertical Crane): The crane lifts the container vertically. It takes 15 s to reach the platform. The useful work done against gravity is $W$ , and the useful power developed is $P$ .
Mechanism 2 (Incline Conveyor): The conveyor carries the same container up a ramp to the same platform. It takes 25 s to reach the platform.

Which row in the table correctly identifies the useful work done against gravity and the useful power developed by Mechanism 2?

	Useful work done against gravity by Mechanism 2	Useful power developed by Mechanism 2
A	more than $W$	less than $P$
B	more than $W$	equal to $P$
C	equal to $W$	less than $P$
D	equal to $W$	equal to $P$

An electric motor is used to lift a cargo container of weight $G\,$ to a storage platform at a height $h\,$ using two different transport mechanisms:

Mechanism 1 (Vertical Crane): The crane lifts the container vertically. It takes 15 s to reach the platform. The useful work done against gravity is $W$ , and the useful power developed is $P$ .
Mechanism 2 (Incline Conveyor): The conveyor carries the same container up a ramp to the same platform. It takes 25 s to reach the platform.

Which row in the table correctly identifies the useful work done against gravity and the useful power developed by Mechanism 2?

	Useful work done against gravity by Mechanism 2	Useful power developed by Mechanism 2
A	more than $W$	less than $P$
B	more than $W$	equal to $P$
C	equal to $W$	less than $P$
D	equal to $W$	equal to $P$

1.7.4 Power

1.7.4 Power Questions