Page 48 - 4167

force
m  M M
F  G .
2
(L  ) x 2

According to the conditions of problem F  F therefore
2
1
M E M M
 .
x 2 (L  ) x 2

This equation reduces to

L  x M
 E .
x M M
Then we have
8
L , 3 844 10 m 8
x    , 0 384 10 m.
M E , 5 976 10 24
1 1
M 22
M , 7 35 10

5. CONSERVATION LAWS IN MECHANICS

The laws of conservation occupy the special place among all laws of
nature . Community and universality of these laws determine their
large scientific, methodological and philosophical importance. They are
basis of major calculations in physics and another sciences s.Оne of the

laws of conservation is law of impulse(linear momentum) conservation

5.1.Law of Impulse(Linear Momentum) Conservation

Law of conservation of linear momentum is a fundamental law of
nature, and it states that if no external force acts on a closed system of
objects, the momentum of the

closed system remains constant.
One of the consequences of this
is that the centre of mass of any

system of objects will always
continue with the same velocity
unless acted on by a force from

outside the system.
Conservation of momentum is a
mathematical consequence of

47
Figure 5.1