Weightlessness

Weightlessness

Abstract

Weightlessness takes place in a free-fall motion . When in free-fall only the force of gravity (downward force ) act upon the object , the object 's weight doesn 't drop but instead , appears to lose as the object fall freely . Newton 's third law states that , `for every action , there is an opposite , but equal reaction ' Two forces are interacting within each other to equalize its effects . The principle in centripetal force and ballistic trajectory applies in explaining weightlessness / free-fall motion . Effects of weightlessness include nausea and disorientation swelling of

sinuses and shrinking of bones

Introduction

Weightlessness is experienced during free-fall . Weightlessness takes place when a person falls freely when accelerating force is not acted upon . Examples of weightlessness include flying in an airplane , use of a parachute and an orbital maneuver in a spacecraft

When in free-fall , only the gravity force acts upon on one 's body (non-contact force . The state of free-fall is common to amusement parks . When the roller coaster suddenly dropped and one 's chair fall into the ground , the object accelerates at the same rate the chair do Only the force of gravity act upon the two objects . Thus , one wouldn 't recognize his / her weight

Microgravity

Newton 's third law states that , `For every action , there is an opposite but equal reaction ' In a space shuttle , in to move , one must push against something such , it can push against the object in opposite direction

Whenever two forces interact with each other , they exert forces . When one sit on the sofa , the body exert a downward force on the sofa and the sofa exert an upward force onto your body . Thus , two forces are interacting (action and reaction forces

Newton 's third law explains how the birds are able to fly . The birds fly through the use of their wings . Their wings pushes the air downwards whilst , the air also push the bird upwards . The size of the force the bird exerted equals to the size of the force on the air

Microgravity is illustrated when one is riding an elevator (where cables break . Both the elevator and the person are travelling at the same speed . The person does not losses his / her weight , this condition happens in a free-fall motion (Zorpette , 1999

Weightlessness can also be described by ballistic trajectory . It examples an object thrown in the air , at any point in the trajectory , is equal to the acceleration due to the force of gravity

Effects of Weightlessness

Astronauts who experienced floating in space shuttle also experienced adverse effects of weightlessness . Astronauts experienced not only dizziness but also disoriented , swelling of sinuses and shrinking of legs . In long run , astronaut 's bones become brittle and their muscles weaken

Disorientation is one of the effects of space motion sickness Disorientation portrays a person drop on a roller coaster ride and / or drank person . It causes conflict in receiving information which the brain processed . The vestibular system (organs located in inner ear does not worked...