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Question: Answered & Verified by Expert
A 2kg stone tied at the end of a string 1 m long is whirled along a vertical circle at a constant speed of 4 s-1. The tension in the string has a value of 52 N when the stone is
PhysicsLaws of MotionNEET
Options:
  • A At the top of the circle
  • B Half way down
  • C At the bottom of the circle
  • D Half way up
Solution:
2865 Upvotes Verified Answer
The correct answer is: At the bottom of the circle
Here, m=2 kg,r=1 m,v=4 s-1

Tension at the bottom of the circle,

TL=mg+mv2r

=20+2×421=52 N

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