WebEarth has a surface gravitational acceleration that is 9.8m/s2. (a) Earth’s radius is 6978km; at what altitude does the gravitational acceleration become half the surface acceleration? (b) What is the orbital period of a satellite orbiting at this altitude? Give your answer is reasonable units. WebThe MSL, approximated by an ellipsoid, is related to gravity or the center of mass of the earth. Discrepancies between a WGS84 ellipsoid, and the geoid vary with location. To continue with this example, elevation …
Fact check: Earth curve, motion detectable, air pressure from gravity
WebAt different points on Earth's surface, the free fall acceleration ranges from 9.764 to 9.834 m/s 2 (32.03 to 32.26 ft/s 2), depending on altitude, latitude, and longitude. A conventional standard value is defined exactly as 9.80665 m/s 2 (32.1740 ft/s 2). Locations of significant variation from this value are known as gravity anomalies. The mean orbital velocity needed to maintain a stable low Earth orbit is about 7.8 km/s (4.8 mi/s), which translates to 28,000 km/h (17,000 mph). However, this depends on the exact altitude of the orbit. Calculated for a circular orbit of 200 km (120 mi) the orbital velocity is 7.79 km/s (4.84 mi/s), but for a higher 1,500 km (930 mi) orbit the velocity is reduced to 7.12 km/s (4.42 mi/s). The launch vehicle's delta-v needed to achieve low Earth orbit starts around 9.4 km/s (5.8 mi/s). shard bridge hambleton
Gravitational acceleration - Wikipedia
WebMar 6, 2024 · The question says "At what height above Earth is zero-gravity?" The answer, as given - is at no height is there zero gravity, because although, at vast distances, … WebApr 14, 2024 · ESA used gravity to ‘slingshot’ JUICE into its mission trajectory, and despite a tense period as we awaited communication from the craft, ... 1:37pm JUICE reaches altitude of 580km. 1:42pm In Earth’s orbit, JUICE safely separates from the mothership on the correct trajectory. Applause in ESA as launch is considered a success. WebA low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never more than about one-third of the radius of Earth.. The term LEO region is also used for the area of space below an … shard bridge hambleton menu