Answers

2014-04-21T14:15:12+05:30
Yes when an object is in a circular motion with uniform speed
there is an force called an centripetal force which acts towards the centre of the circular path traversed by object
This force only changes the direction of velocity and it makes it tangentially so that object can revolve in a circular path
Example
Take a bucket half filled with water tie to a rope and rotate it vertically with a good speed
u will see that water doesn't fall down
(unless u slow down) 
1 4 1