A mass of 2 kg is whirled in a horizontal circle by means of a string at an initial speed…
Physics · JEE Advanced · NTA Exams — Rotational Motion
A mass of 2 kg is whirled in a horizontal circle by means of a string at an initial speed of 5 rpm. Keeping the radius constant, the tension in the string is doubled. The new speed is nearly.
- 14 rpm
- 10 rpm
- 2 rpm
- 7 rpm
Answer
(D) 7 rpm
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