Wednesday
April 23, 2014

Homework Help: physics

Posted by Maria on Wednesday, November 16, 2011 at 6:36pm.

Using Newton's Law of Universal Gravitation, compare the weight of a 68.1 kg astronaut on the surface of the earth to the gravitational pull of the Earth on the same astronaut when she is on the International Space Station.

Constants: Average altitude of the ISS above the surface of the Earth = 387 km. You can find the other constants you will need on the Astronomy Formula Chart.

(In Moodle, enter large numbers with scientific E notation. Example: 100 = 1.00*102 in scientific notation, or 1.00E2 in scientific E notation. Don't forget measurement units! If there are two blanks, enter the numerical value in the first blank, and the measurement unit in the second blank. Example: 1.0 m + 1.0 m = .)

The weight of the astronaut near the surface of the earth:
Fg = mg = (68.1 kg)(strength of gravitational field, g m/s2) =

The pull of the Earth on the astronaut near the surface of the earth:
(G (Nm2)/kg2)(mass of earth, M♁ )(mass of astronaut, 68.1 kg) / (radius of earth, R♁ m)2 =

The pull of the Earth on the astronaut when she is on the ISS:
(G (Nm2)/kg2)(mass of earth, M♁ )(mass of astronaut, 68.1 kg) / (radius of earth, R♁ m + altitude of ISS: )2 =

So, why is the astronaut 'weightless' when she is on the space station?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - Newton's Law of universal gravitation - Describe how Newton used each ...
Physics - Using newton's law of universal gravitation and the following data ...
science - how does mass differ from weight what is law of universal gravitation
Columbs Law - I need help with the following questions from my homework. thanks...
physics - Proponents of astrology claim that the positions of the planets at the...
physics - can someone please help me with this question quick... Which of the ...
Physics - Starting from Newton’s law of universal gravitation, show how to find ...
Science check answer quick! - I really do not understand Number 7 Which of these...
Physics - Assume the Earth is a perfect sphere of radius 6,400 kilometers. Find ...
Physics / Astronomy - Here is my question: Consider the bending of light by the ...

Search
Members