Question
A spring of force constant 10N/m is lying on a frictionless table with one end fixed and another end attached with 0.1 kg mass. The mass is pushed towards fix end by 8cm and released. Find the velocity of mass when the spring becomes normal.
Solution
Given,
Spring constant, k = 10 N/m
The potential energy stored in spring when compressed by 8cm is,
Let, v be the velocity of mass when spring becomes normal.
Applying the law of conservation of energy, we get
Spring constant, k = 10 N/m
The potential energy stored in spring when compressed by 8cm is,


Let, v be the velocity of mass when spring becomes normal.
Applying the law of conservation of energy, we get

