Question

Question no-2 (10 mark)
find the anguler momentum of a body if K.E = 4 jule and M.I = 2kg m2.

Answer 1

KE = 1/2 I ω^2

Given I = 2 kg m^2 and KE = 4 J

ω = (2 KE / I)^1/2 = (2 * 4 / 2)^1/2 = 2^1/2 sec

P = I ω definition of angular momentum

P = 2 kg m^2 * (2 KE / I)^1/2 / sec = 2 * 2^1/2 kg m^2 / sec