- #1
graphicer89
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MY First Post...what force is exerted on a astronaut in space that...??
hi I am prepping for a upcoming exam and I am trying to understand some concepts of physics and the force of gravity...which my exam will be on and i need to understand these problems so that i can know how to do the rest being that i was left in the dark without anything to guide my self by...and if you could help me out i would really appreciate it alot... i will be asking a lot of questions in the upcoming days about all kinds of topics
29 ) What force does Earth's gravity exerts on a 81-kg astronaut who is orbiting in a space station at a distance from the SURFACE of the Earth equal to 2 Earth radii? Show your calculations.Your answer must be in Newtons...PLEASE TELL ME IF THIS IS RIGHT..these are just appoximate numbers that i will be using
F=G Mm/r^2 = 81kg x (6 x 10 ^24) / 2 (EARTH RADII) =
243 x 10^24 (x G = 6.67 x 10 ^-11) = 1620.81 x 10^13 N...this is the answer i got but i feel i am really off...please help me ...i need to know how to do this before i take the exam...
30) The astronaut from the question above (the one that weighs 81 kg )was launched into space by a Saturn rocket. The upward acceleration of a Saturn rocket shortly after blast off is 80 km/s^2. When the Saturn rocket is accelerating, what is the apparent experience as the weight of his body in other words what does the astronaut experience as the weight of his body? Show your calculations keeping in mind the definition of weight and that more than acceleration due to gravity is acting on the astronaut.Your answer must be in Newtons...this is the answer i got...
..F=MxA...so 81 kg x 80 m/s^2 =6480 N...but also think this is wrong...i don't have a lot of practice with this so please help me out ...
hi I am prepping for a upcoming exam and I am trying to understand some concepts of physics and the force of gravity...which my exam will be on and i need to understand these problems so that i can know how to do the rest being that i was left in the dark without anything to guide my self by...and if you could help me out i would really appreciate it alot... i will be asking a lot of questions in the upcoming days about all kinds of topics
29 ) What force does Earth's gravity exerts on a 81-kg astronaut who is orbiting in a space station at a distance from the SURFACE of the Earth equal to 2 Earth radii? Show your calculations.Your answer must be in Newtons...PLEASE TELL ME IF THIS IS RIGHT..these are just appoximate numbers that i will be using
F=G Mm/r^2 = 81kg x (6 x 10 ^24) / 2 (EARTH RADII) =
243 x 10^24 (x G = 6.67 x 10 ^-11) = 1620.81 x 10^13 N...this is the answer i got but i feel i am really off...please help me ...i need to know how to do this before i take the exam...
30) The astronaut from the question above (the one that weighs 81 kg )was launched into space by a Saturn rocket. The upward acceleration of a Saturn rocket shortly after blast off is 80 km/s^2. When the Saturn rocket is accelerating, what is the apparent experience as the weight of his body in other words what does the astronaut experience as the weight of his body? Show your calculations keeping in mind the definition of weight and that more than acceleration due to gravity is acting on the astronaut.Your answer must be in Newtons...this is the answer i got...
..F=MxA...so 81 kg x 80 m/s^2 =6480 N...but also think this is wrong...i don't have a lot of practice with this so please help me out ...