Published by:
CGP EDU Academic Team
Published on: August 23, 2026
A ball of mass 
is dropped from a height 
on a platform fixed at the top of vertical spring (as shown in figure). The ball stays on the platform and the platform is depressed by a distance 
. The spring constant is 
'. (Use 
)
Text Solution
Verified by ExpertsThe correct answer is:
120
(120) By energy conservation
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