A stone of mass ‘m’ is rotated in a circular path with a uniform s

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 your 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) Uniform speed. (ii) Yes, the stone is moving with uniform acceleration. The acceleration act along the tangent drawn at that point of the circle. (iii) Centripetal force acts on the hand along the tangent at that point.

A stone of mass ‘m’ is rotated in a circular path with a uniform speed by tying a strong string with the help of your 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) Uniform speed.

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

(iii) Centripetal force acts on the hand along the tangent at that point.