H2. Suppose a particle of constant mass m with position x > 0, moves in one space dimension under the influence of the gravitational force of another point particle of constant mass M sitting at x = 0, i.e. the attracting force is F (a) Using Newton's second law, show that d (2m²² -mx dt GmM x² = GmM = 0. (i.e., the total energy, sum of kinetic and potential energy, is conserved). (b) Using the change of variables vd dr, solve the equation of motion and determine the velocity of the particle v(x) as a function of x assuming it starts with zero velocity at xo. Does the particle's speed in x = 0 depend on the initial position? X

Elements Of Electromagnetics
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H2. Suppose a particle of constant mass m with position x > 0, moves in one space dimension
under the influence of the gravitational force of another point particle of constant mass M
sitting at x = 0, i.e. the attracting force is
F
=
(a) Using Newton's second law, show that
GmM
x²
i.
1
dr (2m²2² _ GimM)
dt
= 0.
(i.e., the total energy, sum of kinetic and potential energy, is conserved).
dx dt
(b) Using the change of variables vdy = r, solve the equation of motion and determine the
velocity of the particle v(x) as a function of x assuming it starts with zero velocity at xo. Does
the particle's speed in x = 0 depend on the initial position?
Transcribed Image Text:H2. Suppose a particle of constant mass m with position x > 0, moves in one space dimension under the influence of the gravitational force of another point particle of constant mass M sitting at x = 0, i.e. the attracting force is F = (a) Using Newton's second law, show that GmM x² i. 1 dr (2m²2² _ GimM) dt = 0. (i.e., the total energy, sum of kinetic and potential energy, is conserved). dx dt (b) Using the change of variables vdy = r, solve the equation of motion and determine the velocity of the particle v(x) as a function of x assuming it starts with zero velocity at xo. Does the particle's speed in x = 0 depend on the initial position?
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