Physics Practice Problems Angular Momentum of a Point Mass Practice Problems Solution: While a satellite orbits a celestial body in space...

# Solution: While a satellite orbits a celestial body in space, its angular momentum is always conserved, so it is important to be able to measure the angular momentum of a satellite. Suppose some comet with 1x1015 kg of mass was in orbit around the sun, and at some point in time its position (in a coordinate system that the sun was at the center of) was r = (1.8 x 1010 km) i + (2.7 x 1010 km) k moving with a velocity of v = (- 35 km/s) j + (60 km/s) k. What is the angular momentum (in vector form) of this comet about the sun?

###### Problem

While a satellite orbits a celestial body in space, its angular momentum is always conserved, so it is important to be able to measure the angular momentum of a satellite. Suppose some comet with 1x1015 kg of mass was in orbit around the sun, and at some point in time its position (in a coordinate system that the sun was at the center of) was r = (1.8 x 1010 km) i + (2.7 x 1010 km) k moving with a velocity of v = (- 35 km/s) j + (60 km/s) k. What is the angular momentum (in vector form) of this comet about the sun?