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Halley's comet, which passes around the Sun every 76 years, has an elliptical orbit. When closest...

Halley's comet, which passes around the Sun every 76 years, has an elliptical orbit. When closest to the Sun (perihelion) it is at a distance of 8.823

Solutions

Expert Solution

the mass of Halley's comet to be 9.8�1014kg

perihelion distance r = 8.823�10 10m

Speed at perinelion point v = 54.6km/s

                                        = 54.6 x 10 3 m / s

Aphelion distance r ' = 6.152�10 12m

Speed at aphelion v ' = 783m/s

The angular momentum of Halley's comet at perihelion L = mv r

                                                                                  = 4.72 x 10 30 kg m 2 / s

The angular momentum of Halley's comet at aphelion L ' = mv' r '

                                                                                 = 4.72 x 10 30 kg m 2 / s

i.e., angular momentum is conserved

genius_generous answered 4 weeks ago
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