Question

Find the angular momentum of a satellite of mass 400 kg moving around the earth in radius 4 into 10 to the power minus 7 m

Answer 1

I think you did mistake in asking question. because we can find angular momentum when we have given at least radius of circular orbit revolve around the earth .

Let radius of fixed circular orbit is r.
m is mass of satellite and M is the mass of earth.

we know, orbital speed of satellite revolving around the earth in circular orbit of radius r is given by $v_0=\sqrt{\frac{GM}{r}}$

now, angular momentum, L = $mv_0r$

$\sqrt{GMm^2r}$