formally logical model

PROBLEM SLOVING

W

Moon

hat does happen it all satellites do not work for one hour? Describe your life

E xample 1_________________________________

R_E-M The distance between the centers of the Moon and the

Earth is about 3.8 x 10⁵km

1. What is the speed of rotation of the Moon around the

Earth Earth

2. How long does it take for the Moon to revolve once around the Earth?

M_Earth=6x10²⁴kg, M_Moon=7,5x10²²kg, G=6,67x10^-11 Nm²/kg²

Solution

1. We can find the speed of the Moon by the formula

_orbital= ; _orbital== ;

_orbital=1,03x10³ m/s

2. P

   Exercise 1

   A rocket is on the surface of the Earth. Then, it rises at the point which R_E above the Earth.

   How different is the weight of the rocket at that point?

   eriod could be found by formula

T=

T=

T=2325404,64 27days

E xample 2___________________________________

T he rocket is launched from a planet of mass 5x10²⁸kg and radius of 3,5x10⁸m. The rocket can reach maximal speed of 120 km/s. What purposes can we use this rocket for? Can we use this pocket for circular orbit, elliptical orbit, to travel to other planets?

Solution:

_____________________ Let’s analyse the planet first. We need to calculate

_orbital near tp the planed and _escape

_orbital= ; _orbital== ;

_orbital=97614 m/s; _escape= ;

CHAPTERS

_orbital= ;

_orbital=138047m/s

New we compare the maximal speed of the rocket with found