質(zhì)量損失不帶走角動量 角動量守恒 Jw=衡量 球體的轉(zhuǎn)動慣量J=2mR²/5 所以新的自傳角速度為原角速度的20000倍 所以速度是20000/30rad每天
動能W=Jw²/2 最終動能變?yōu)楝F(xiàn)在的20000倍
我英語不太好.
Suppose our Sun eventually collapses into a white dwarf,losing about half its mass in the process,and winding up with a
Suppose our Sun eventually collapses into a white dwarf,losing about half its mass in the process,and winding up with a radius 1.0% of its existing radius.Assuming the lost mass carried away no angular momentum,what would the Sun's new rotation rate be?(Take the Sun's current period to be about 30 days.) What would be its final KE in terms of its initial KE of today?
英語人氣:496 ℃時間:2020-04-14 10:40:57
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