A small body of mass m, tied to a string and revolved in a vertical circle is just able to reach to the top of the path and complete the circle. The tension in the string at the lowest point of the path is:
Correct answer: D. 6 mg
- A. mg
- B. 4 mg
- C. 2mg
- D. 6 mg
Explanation
The correct answer is option A) mg, which represents the tension in the string at the lowest point of the path. The tension at the lowest point is equal to the weight of the body.
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About Simple Harmonic Motion
Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.
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