Page 73 - Force 10
P. 73
Weightlessness of an object: The condition at which weight of
an object in spring balance is found to be zero is called
weightlessness. There are two types of weightlessness. They are
i. Real weightlessness: The type of weightlessness at which
weight of an object measured in spring balance and weight
calculated mathematically both are found to be zero is
called real weightlessness. It is possible when an object lies
at null point.
ii. Apparent weightlessness: The condition at which weight of
an object measured in spring balance is seems to be zero is
called apparent weightlessness. It is possible when an
object falls freely inside the gravitational field of heavenly
body or revolving on a circular orbit.
