Question 619: Centre of Mass and Rotational Motion

Question

A bob is whirled in a horizontal plane by means of a string with an initial speed of $$\omega \mathrm{~rpm}$$. The tension in the string is $$T$$. If speed becomes $$2 \omega$$ while keeping the same radius, the tension in the string becomes:

Accepted Answer

Answer

$$T$$

Answer

$$4 T$$

Answer

$$\frac{T}{4}$$

Answer

$$\sqrt{2} T$$

Centre of Mass and Rotational Motion

A bob is whirled in a horizontal plane by means of a string with an initial speed of $\omega \mathrm{~rpm}. The tension in the string is T. If speed becomes 2 \omega$ while keeping the same radius, the tension in the string becomes:

Choose the correct answer: