JEE Mains · Physics · STD 11 - 5. work,energy,power and collision
A small bob tied at one end of a thin string of length \(1\, m\) is describing a vertical circle so that the maximum and minimum tension in the string are in the ratio \(5: 1 .\) The velocity of the bob at the height position is ............. \(m / s\) (Take \(\left.g=10 \,m / s ^{2}\right)\)
- A \(0\)
- B \(10\)
- C \(5\)
- D \(8\)
Answer & Solution
Correct Answer
(C) \(5\)
Step-by-step Solution
Detailed explanation
Let the speed of bob at lowest position be \(v _{1}\) and at the highest position be \(v _{2}\). Maximum tension is at lowest position and minimum tension is at the highest position. Now, using, conservation of mechanical energy,…
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