Question

xplain why man inside an artificial satellite feels weightlessness ?​

Answer 1

a man inside an artificial satellite feels weightlessness because the force of attraction due to Earth is non- effective due to particular design of satellite

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Answer 2

$\textsf{\underline{\Large{Weightlessness}}}$

$\textsf{\underline{\large{Inside an Artificial Satellite}}}$ :

Let us consider that an artificial satellite is revolving around the earth in an orbit of radius, r. Then, it's acceleration will be $\mathsf{\dfrac{GM}{{r}^{2}}}$, towards the centre of the earth.

Here, M is the mass of the earth. Suppose a body of mass m lies on an inside surface of the satellite.

Forces acting on this body will be

1 ). Gravitational pull of the earth = $\mathsf{\dfrac{GMm}{{r}^{2}}}$

2 ). Reaction Force, R of the surface.

Using Newton's 2nd Law,

$\mathsf{\dfrac{GMm}{{r}^{2}} - \:R\:=\:ma\:=\:m({\dfrac{GMm}{{r}^{2}}}})$

$\boxed{\mathsf{R\:=\:0}}$

Hence, the surface does not exert any type of force on the body and thus it's apparent weight is 0.

That's why man inside an artificial satellite feels weightlessness.