Question

A stone of mass $1kg$ is tied to end of a massless string of length $1m$. If the breaking tension of the string is $400N$, then maximum linear velocity, the stone can have without breaking the string, while rotating in horizontal plane, is :

• A. $40m{s}^{-1}$
• B. $20m{s}^{-1}$
• C. $400m{s}^{-1}$
• D. $10m{s}^{-1}$

Answer 1

Answer: (B)

Correct answer is (b) $20m{s}^{-1}$