pls explain why does a astronuat feels weghtlessness in a space shuttle in orbit of the earth????? Also explain the relation between weightlesnss and free fall
An astronaut feels weightlessness in a space shuttle in orbit of the earth because a person feels weight only when the surface on which he is standing exerts a reactionary force on him.Since the acceleration of the astronaut and that of the satellite revolving around the earth are equal( each equal to acceleration of earth), the acceleration of the astronaut with respect to satellite is zero. Therefore person is weightless with respect to the satellite.
Weightlessness is absence of reaction force exerted by the surface on which we are standing.
Free fall is falling from a certain height with the acceleration due to gravity, that is 9.8 m/s2.
Three identical balls are placed on a frictionless
horizontal surface touching each other. They stick to
each other because of adhesive. Another ball of same
radius and mass m is placed over the void created by
the three balls. Find the forces applied by the balls
kept on the floor to each other if the system remains
in equilibrium.
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A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.
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Last Activity: 9 Months ago
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Last Activity: 3 Years ago
