A thin uniform rod of mass m and length l is free to rotate about its upper end. When it is at rest, it receives an impulse J at its lowest point, normal to its length. Immediately after impact,
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, b, c, d)
Angular momentum = linear momentum × perpendicular distance from the point of rotation
or L = JI
Also, I = ml 2 /3.
∴ ∴ ω ω = L/I = 3J/ml.
Kinetic energy = 
= 
v e = ω ω
.
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