1. The problem statement, all variables and given/known data A uniform, spherical cloud of interstellar gas has mass 2.03×1030 kg and radius 1.03x1013m and is rotating with period 1.43×106 years. The cloud collapses to from a star 7.03x108m in radius. Find the star's rotation period. 2. Relevant equations I1ω1=I2ω2 Θ=ωt 3. The attempt at a solution Determine ω: 2π=ω(1.43×106) ω=4.4×10-6 Use Moment of Inertia Equation: I=2/5(mr2) I1=8.61×1055 I2=4.01×1047 ∴ ω2=944.74 rad/year Determine t: Θ=ωt ∴ t=Θ/ω =2π/944.74 =6.7×10-3 =2.42 days Hey guys, I've been trying to do this homework question for a while now but I can't seem to get to the answer of 88.9 minutes. Any help getting there is much appreciated. Thank you all in advance.