A stone of mass m tied to a string of length l is rotated in a circle with the other end of the string as the centre. The speed of the stone is v. If the string breaks, the stone will move
Correct answer: B. Along the tangent
- A. Toward the centre of circle
- B. Along the tangent
- C. Away from centre of circle
- D. All of these
Explanation
The stone will move along the tangent if the string breaks.The reason for this is that the stone's velocity is tangent to the circle at the point where the string breaks. When the string breaks, the centripetal force that was keeping the stone in a circular motion is no longer there. The stone will then continue to move in the direction of its velocity, which is tangent to the circle.
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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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