Question

Question 5.22 If, in Exercise 5.21, the speed of the stone is increased beyond the maximum permissible value, and the string breaks suddenly, which of the following correctly describes the trajectory of the stone after the string breaks:

(a) the stone moves radially outwards,

(b) the stone flies off tangentially from the instant the string breaks,

(c) the stone flies off at an angle with the tangent whose magnitude depends on the speed of the particle ?

Chapter Laws Of Motion Page 111

Answer 1

We know,
When a stone is tied to one end of the string is whirled round in a circle then velocity of stone at any point is in tangential direction.

So, whenstring breaks suddenly, the stone flies off tangentially .
Hence, option (B) is correct .

Answer 2

Answer:

Option 'B' is correct

Explanation:

As we know that when a mass rotates along a fixed point it has 2 types of acceleration i.e tangential and centripetal thus if the string breaks due to more tension centripetal acceleration will end  and thus it will move along its tangent due to tangential acceleration