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Kinetic energy at different points of a vertical circle

This type of question, asked 2 times: 29 Jan 2024, 22 Jan 2025. All 2 questions below, oldest first.

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  1. Question 1

    29 Jan 2024

    102
    A bob of mass ' mm ' is suspended by a light string of length ' LL '. It is imparted a minimum horizontal velocity at the lowest point A such that it just completes half circle reaching the top most position B. The ratio of kinetic energies ( K.E. )A( K.E. )B\frac{(\text{~K.E.~})_{A}}{(\text{~K.E.~})_{B}} is:

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  2. Question 2

    22 Jan 2025

    95
    A body of mass 100 g is moving in circular path of radius 2 m on vertical plane as shown in figure. The velocity of the body at point A is 10 m/s10\text{ }m/s. The ratio of its kinetic energies at point B and C is : (Take acceleration due to gravity as 10 m/s210\text{ }m/s^{2} )

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