Astronauts in the International Space Station (ISS) experience zero-g. That is,

Question

Astronauts in the International Space Station (ISS) experience zero-g. That is, they float in an absence of the sensation of gravity. Which of the following best describes why this is the case? The ISS so far from the center of the Earth that the inverse-square law of gravity renders the effect of the Earth's mass negligible. The mass of the ISS itself surrounds the astronauts and provides an all-encompassing gravitational force that pulls in all directions thus resulting in a net gravitational pull of zero. The astronauts' orbital speed is so high that the effects of gravity are infinitesimally small in comparison. The effects of gravity are only applicable in the presence of an atmosphere, and there is no atmosphere at the altitude of the ISS. Because it is in orbit, the ISS is in free-fall.

Explanation / Answer

correct option is (b),

because,

net gravitational force on the mass due to surrounding all other masses in the universe is zero,

Fnet=m*g

0=m*g

===> g=0

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.