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A spaceman in training is rotated in a s...

A spaceman in training is rotated in a seat at the end of a horizontal arm of length 5 m. If he can with stand acceleration upto 9 g, then what is the maximum number of revolution per second permissible? (Take, g =`10ms^(-2)`)

A

13.5 rev/s

B

1.35 rev/s

C

0.675 rev/s

D

6.75 rev/s

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The correct Answer is:
C
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