Question

A stone of mass 1 kg tied to the end of a string of length 1 m, is whirled in a horizontal circle, with a uniform angular velocity 2 radian/sec. The tension of the string is (N)

• A. 4
• B. 44565
• C. 2
• D. 44563

Answer 1

Answer: (A)

4

Answer 2

$T = F = mr \omega^2 = 1 \times 1 \times 2^2 = 4 \, N$