Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A 60 kg crate is raised from the ground to a platform 
high in two different ways:
Case I: Lifted vertically upward at constant speed with a rope.
Case II: Pulled at constant speed along a smooth 
incline that reaches the same height 
.
Ignoring air resistance and any pulley losses, the ratio of the work done against gravity in Case I to Case II is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Gravity is a conservative force, so work done against gravity depends only on the change in height, not the path.
For either case.
Same in both cases ⇒ ratio 
.
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