A stone of mass 'm' is rotated in a circular path with a uniform speed

1.	A stone of mass 'm' is rotated in a circular path with a uniform speed by tying a strong string with the help of our hand Answer the following questions : (i) Is the stone moving with a uniform or variable speed? (ii) Is the stone moving with a uniform acceleration? In which direction does the acceleration act?(iii) What kind of force acts on the hand and state its direction?
Answer» (i) The stone is moving with a uniform speed. (ii) Yes, the stone is moving with a uniform acceleration. The acceleration acts along the tangent drawn at that point of the circle. (iii) The force which acts on the hand is the centrifugal force. Its direction is opposite to the centripetal force i.e, away from the centre.

A stone of mass 'm' is rotated in a circular path with a uniform speed by tying a strong string with the help of our hand Answer the following questions : (i) Is the stone moving with a uniform or variable speed? (ii) Is the stone moving with a uniform acceleration? In which direction does the acceleration act?(iii) What kind of force acts on the hand and state its direction?

Answer»

(i) The stone is moving with a uniform speed.

(ii) Yes, the stone is moving with a uniform acceleration. The acceleration acts along the tangent drawn at that point of the circle.

(iii) The force which acts on the hand is the centrifugal force. Its direction is opposite to the centripetal force i.e, away from the centre.