From what minimum height ‘h’ in meter must the system be released when spring is in its natural length as shown in the figure. So that after perfectly inelastic collision. (e = 0), of block B, with ground, B may be lifted off ground. (Take k = 40 N/m, g = 10 m/s 2 , m A = 2kg, m B = 4kg)

Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(2)
Sol. m A gh’ +
= m A gh
And kh’ = m B g
Solving h = 2 m
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