Question

2. A boy swirling a stone tied with a string in vertical circular path. If the
string breaks when stone is at the topmost position on circular path,
then the stone
a. Will fall to ground
b. Will move along a horizontal line tangential to the circular path.
c. Will move along a vertical upward line tangential to circular path.
d. Will continue to move in circular path.​

Answer 1

Explanation:

When the boy is whirling a stone tied with a string in a circular path, the centripetal force acts towards the center of the circular path. However, when the string breaks the centripetal force ceases and there is no force acting. Thus, the stone as per Newtons first law will continue in a straight line and fly off along the tangent to the circular path.