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Passage - I : Two skaters, each of mas...

Passage - I :
Two skaters, each of mass 50kg, approach each other along parallel paths separataed by 3m. They have equal and oppsite velocities of `10"ms"^(-1)`, The first carries a long pole 3m long and the second skater grabs the end of it as he passes on the friction less surface and the two skaters are connected by the pole.

By pulling on the pole, the skaters reduce their distance apart to 1m. The angular velocity now is and the ratio of K.E. of system in above cases is `("KE"_(f))/("KE"_(i))=`

A

`45" rad s"^(-1)` ,7

B

`50" rad s"^(-1)` ,10

C

`55" rad s"^(-1)` ,9

D

`60" rad s"^(-1)` ,9

Text Solution

Verified by Experts

The correct Answer is:
D
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