Page 72 - Force 10
P. 72
Free fall: The falling of an object without external
resistance is called freefall.
i. An object falls freely inside the gravitation field of
heavenly body when the falling objects falls with
the acceleration equal to acceleration due to
gravity ( = g).
ii. An object falls freely at the null point in the space
when it experiences equal centripetal force and
centrifugal force so that it takes the circular course
of motion.
iii.Null point: Those points in the outers pace at which
resultant force of gravity experienced by an object
is found to be zero is called Null point.
