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An astronaut leaves the International Space Station on a tethered line. Although ISS and Earth exert gravitational force on the astronaut, why does she appear to be weightless.

Respuesta :

MissPhiladelphia
With respect to the force of gravity, fi my answer is correct. This is caused by the amount of gravitation pull of Earth on the astronaut. Thank you for your question. Please don't hesitate to ask in Brainly your queries. 

Answer:

Gravitational force is a very weak force. It acts between tow bodies having mass.  We know that the gravitational force decreases by square of distance. Both ISS and astronaut are in space where there is negligible gravitational force due to Earth. There is micro-gravity.

Weight is a reaction force -it is a contact force. On Earth, one can measure the weight by measuring the normal force with acts when we stand on the surface of Earth which is in response to the gravitational pull acting downwards. In space there is no contact surface, thus there is no normal force acting. Therefore, astronaut feels weightlessness.