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Answer to Question #40670 in Mechanics | Relativity for Sanjeev

Question #40670
A STONE OF MASS 1KG TIED TO A LIGHT INEXTENSIBLE STRING OF LENGTH = 10/3m , WHIRLING IN A CIRCULAR PATH IN A VERTICAL PLANE. THE RATIO OF MAX. TENSION IN THE STRING TO THE MIN. TENSION IN THE STRING IS 4. THE SPEED OF THE STONE AT THE HIGHEST POINT OF THE CIRCLE IS :
1. 10 m/s
2. 5(2)^1/2 m/s
3. 10(3)^1/3 m/s
4. 20 m/s
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Assignment Expert
10.04.14, 15:40

Dear Sanjeev.

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Sanjeev
08.04.14, 19:37

THANKS..KEEP ANSWERING MY QUESTIONS LIKE THIS AS I HAVE MY MANIPAL ENTRANCE EXAM ON 18TH APRIL...THANKS

Assignment Expert
08.04.14, 17:55

The tension of a string is different due to centrifugal force. While gravity is always directed downward, the centrifugal force is directed upward at the highest point and downward at the lowest point. So, the tension force is a sum of gravity and centrifugal force at the lower point, and a difference at the highest, see the first two Eqns. All the rest is mathematics.

Sanjeev
07.04.14, 00:08

please provide another explanation...not understood

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