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General
Easy
Question
A small ball B of mass m is suspended with light inelastic string of length L from a block A of same mass m which can move on smooth horizontal surface as shown in the figure. The ball is displaced by angle 
from equilibrium position & then released.
Tension in string when it is vertical, is
- mg
- mg(2–cos)
- mg (3 – 2cos)
- none of these
)
)
The correct answer is: none of these
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