Question

A stone is tied to a string of length T and is
whirled in a vertical circle with the other end of the
string as the centre. At a certain instant of time,
the stone is at its lowest position and has a
speed 'u. The magnitude of the change in velocity
as it reaches a position where the string is
horizontal (g being acceleration due to gravity) is
​

Answer 1

Answer:

At a certain instant of time the stone is at its lowest position and has a speed u . The magnitude of the change in velocity as it reaches a position, where the string ...