JEE Advanced · PhysicsHard
A particle of mass is attached to a light string of length and is moving in a vertical circle. If the tension in the string at the highest point is zero, the tension at the lowest point is:
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: C —
Solution
At the top, . By energy conservation, . At the bottom, , yielding .
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